
    Donald J. TRUMP, et al., Petitioners v. MAZARS USA, LLP, et al.;
    Donald J. Trump, et al., Petitioners v. Deutsche Bank AG, et al.
    No. 19-715 No. 19-760
    Supreme Court of the United States.
    Argued May 12, 2020 Decided July 9, 2020
    Patrick Strawbridge, Boston, MA, for the petitioners.
    Principal Deputy Solicitor General Jeffrey B. Wall for the United States, as amicus curiae, by special leave of the Court, supporting the petitioners.
    Douglas N. Letter, Washington, DC, for Committees of the U. S. House of Representatives respondents.
    Douglas N. Letter, General Counsel, Todd B. Tatelman, Principal Deputy General Counsel, Megan Barbero, Deputy General Counsel, Josephine Morse, Deputy General Counsel, Brooks M. Hanner, Associate General Counsel, Adam A. Grogg, Associate General Counsel, Sarah E. Clouse, Associate General Counsel, Jonathan B. Schwartz, Attorney, U.S. House of Representatives, Office of General Counsel, Washington, DC, for respondent Committees of the U.S. House of Representatives.
    Jay Alan Sekulow, Stuart J. Roth, Jordan Sekulow, Constitutional Litigation, and Advocacy Group, P.C., Washington, DC, Stefan C. Passantino, Michael Best & Friedrich LLP, Washington, DC, William S. Consovoy, Counsel of Record, Thomas R. McCarthy, Alexa R. Baltes, Jordan M. Call, Consovoy McCarthy PLLC, Arlington, VA, Patrick Strawbridge, Consovoy McCarthy PLLC, Boston, MA, for petitioners.
    Lawrence S. Robbins, Roy T. Englert, Jr., Alan D. Strasser, Jennifer S. Windom, D. Hunter Smith, Brandon L. Arnold, Robbins, Russell, Englert, Orseck, Untereiner & Sauber LLP, Douglas N. Letter, Todd B. Tatelman, Megan Barbero, Josephine Morse, Adam A. Grogg, Jonathan B. Schwartz, Office of General Counsel U.S. House of Representatives, Washington, D.C., for respondent Committees of the U.S. House of Representatives.
    
      
      Together with 19-760, Trump et al. v. Deutsche Bank AG et al. , on certiorari to the United States Court of Appeals for the Second Circuit.
    
   CHIEF JUSTICE ROBERTS delivered the opinion of the Court.

Over the course of five days in April 2019, three committees of the U. S. House of Representatives issued four subpoenas seeking information about the finances of President Donald J. Trump, his children, and affiliated businesses. We have held that the House has authority under the Constitution to issue subpoenas to assist it in carrying out its legislative responsibilities. The House asserts that the financial information sought here-encompassing a decade's worth of transactions by the President and his family-will help guide legislative reform in areas ranging from money laundering and terrorism to foreign involvement in U. S. elections. The President contends that the House lacked a valid legislative aim and instead sought these records to harass him, expose personal matters, and conduct law enforcement activities beyond its authority. The question presented is whether the subpoenas exceed the authority of the House under the Constitution.

We have never addressed a congressional subpoena for the President's information. Two hundred years ago, it was established that Presidents may be subpoenaed during a federal criminal proceeding, United States v. Burr , 25 F.Cas. 30 (No. 14,692d) (CC Va. 1807) (Marshall, Cir. J.), and earlier today we extended that ruling to state criminal proceedings, Trump v. Vance, ante , --- U.S. at p. ----, 140 S.Ct. at p. ----. Nearly fifty years ago, we held that a federal prosecutor could obtain information from a President despite assertions of executive privilege, United States v. Nixon , 418 U.S. 683, 94 S.Ct. 3090, 41 L.Ed.2d 1039 (1974), and more recently we ruled that a private litigant could subject a President to a damages suit and appropriate discovery obligations in federal court, Clinton v. Jones , 520 U.S. 681, 117 S.Ct. 1636, 137 L.Ed.2d 945 (1997).

This case is different. Here the President's information is sought not by prosecutors or private parties in connection with a particular judicial proceeding, but by committees of Congress that have set forth broad legislative objectives. Congress and the President-the two political branches established by the Constitution-have an ongoing relationship that the Framers intended to feature both rivalry and reciprocity. See The Federalist No. 51, p. 349 (J. Cooke ed. 1961) (J. Madison); Youngstown Sheet & Tube Co. v. Sawyer , 343 U.S. 579, 635, 72 S.Ct. 863, 96 L.Ed. 1153 (1952) (Jackson, J., concurring). That distinctive aspect necessarily informs our analysis of the question before us.

I

A

Each of the three committees sought overlapping sets of financial documents, but each supplied different justifications for the requests.

The House Committee on Financial Services issued two subpoenas, both on April 11, 2019. App. 128, 154, 226. The first, issued to Deutsche Bank, seeks the financial information of the President, his children, their immediate family members, and several affiliated business entities. Specifically, the subpoena seeks any document related to account activity, due diligence, foreign transactions, business statements, debt schedules, statements of net worth, tax returns, and suspicious activity identified by Deutsche Bank. The second, issued to Capital One, demands similar financial information with respect to more than a dozen business entities associated with the President. The Deutsche Bank subpoena requests materials from "2010 through the present," and the Capital One subpoena covers "2016 through the present," but both subpoenas impose no time limitations for certain documents, such as those connected to account openings and due diligence. Id., at 128, 155.

According to the House, the Financial Services Committee issued these subpoenas pursuant to House Resolution 206, which called for "efforts to close loopholes that allow corruption, terrorism, and money laundering to infiltrate our country's financial system." H. Res. 206, 116th Cong., 1st Sess., 5 (Mar. 13, 2019). Such loopholes, the resolution explained, had allowed "illicit money, including from Russian oligarchs," to flow into the United States through "anonymous shell companies" using investments such as "luxury high-end real estate." Id. , at 3. The House also invokes the oversight plan of the Financial Services Committee, which stated that the Committee intends to review banking regulation and "examine the implementation, effectiveness, and enforcement" of laws designed to prevent money laundering and the financing of terrorism. H. R. Rep. No. 116-40, p. 84 (2019). The plan further provided that the Committee would "consider proposals to prevent the abuse of the financial system" and "address any vulnerabilities identified" in the real estate market. Id. , at 85.

On the same day as the Financial Services Committee, the Permanent Select Committee on Intelligence issued an identical subpoena to Deutsche Bank-albeit for different reasons. According to the House, the Intelligence Committee subpoenaed Deutsche Bank as part of an investigation into foreign efforts to undermine the U. S. political process. Committee Chairman Adam Schiff had described that investigation in a previous statement, explaining that the Committee was examining alleged attempts by Russia to influence the 2016 election; potential links between Russia and the President's campaign; and whether the President and his associates had been compromised by foreign actors or interests. Press Release, House Permanent Select Committee on Intelligence, Chairman Schiff Statement on House Intelligence Committee Investigation (Feb. 6, 2019). Chairman Schiff added that the Committee planned "to develop legislation and policy reforms to ensure the U. S. government is better positioned to counter future efforts to undermine our political process and national security." Ibid.

Four days after the Financial Services and Intelligence Committees, the House Committee on Oversight and Reform issued another subpoena, this time to the President's personal accounting firm, Mazars USA, LLP. The subpoena demanded information related to the President and several affiliated business entities from 2011 through 2018, including statements of financial condition, independent auditors' reports, financial reports, underlying source documents, and communications between Mazars and the President or his businesses. The subpoena also requested all engagement agreements and contracts "[w]ithout regard to time." App. to Pet. for Cert. in 19-715, p. 230.

Chairman Elijah Cummings explained the basis for the subpoena in a memorandum to the Oversight Committee. According to the chairman, recent testimony by the President's former personal attorney Michael Cohen, along with several documents prepared by Mazars and supplied by Cohen, raised questions about whether the President had accurately represented his financial affairs. Chairman Cummings asserted that the Committee had "full authority to investigate" whether the President: (1) "may have engaged in illegal conduct before and during his tenure in office," (2) "has undisclosed conflicts of interest that may impair his ability to make impartial policy decisions," (3) "is complying with the Emoluments Clauses of the Constitution," and (4) "has accurately reported his finances to the Office of Government Ethics and other federal entities." App. in No. 19-5142 (CADC), p. 107. "The Committee's interest in these matters," Chairman Cummings concluded, "informs its review of multiple laws and legislative proposals under our jurisdiction." Ibid.

B

Petitioners-the President in his personal capacity, along with his children and affiliated businesses-filed two suits challenging the subpoenas. They contested the subpoena issued by the Oversight Committee in the District Court for the District of Columbia (Mazars , No. 19-715), and the subpoenas issued by the Financial Services and Intelligence Committees in the Southern District of New York (Deutsche Bank , No. 19-760). In both cases, petitioners contended that the subpoenas lacked a legitimate legislative purpose and violated the separation of powers. The President did not, however, resist the subpoenas by arguing that any of the requested records were protected by executive privilege. For relief, petitioners asked for declaratory judgments and injunctions preventing Mazars and the banks from complying with the subpoenas. Although named as defendants, Mazars and the banks took no positions on the legal issues in these cases, and the House committees intervened to defend the subpoenas.

Petitioners' challenges failed. In Mazars , the District Court granted judgment for the House, 380 F.Supp.3d 76 (DC 2019), and the D. C. Circuit affirmed, 940 F.3d 710 (2019). In upholding the subpoena issued by the Oversight Committee to Mazars, the Court of Appeals found that the subpoena served a "valid legislative purpose" because the requested information was relevant to reforming financial disclosure requirements for Presidents and presidential candidates. Id. , at 726-742 (internal quotation marks omitted). Judge Rao dissented. As she saw it, the "gravamen" of the subpoena was investigating alleged illegal conduct by the President, and the House must pursue such wrongdoing through its impeachment powers, not its legislative powers. Id. , at 773-774. Otherwise, the House could become a "roving inquisition over a co-equal branch of government." Id. , at 748. The D. C. Circuit denied rehearing en banc over several more dissents. 941 F.3d 1180, 1180-1182 (2019).

In Deutsche Bank , the District Court denied a preliminary injunction, 2019 WL 2204898 (SDNY, May 22, 2019), and the Second Circuit affirmed "in substantial part," 943 F.3d 627, 676 (2019). While acknowledging that the subpoenas are "surely broad in scope," the Court of Appeals held that the Intelligence Committee properly issued its subpoena to Deutsche Bank as part of an investigation into alleged foreign influence over petitioners and Russian interference with the U. S. political process. Id. , at 650, 658-659. That investigation, the court concluded, could inform legislation to combat foreign meddling and strengthen national security. Id. , at 658-659, and n. 59.

As to the subpoenas issued by the Financial Services Committee to Deutsche Bank and Capital One, the Court of Appeals concluded that they were adequately related to potential legislation on money laundering, terrorist financing, and the global movement of illicit funds through the real estate market. Id. , at 656-659. Rejecting the contention that the subpoenas improperly targeted the President, the court explained in part that the President's financial dealings with Deutsche Bank made it "appropriate" for the House to use him as a "case study" to determine "whether new legislation is needed." Id. , at 662-663, n. 67.

Judge Livingston dissented, seeing no "clear reason why a congressional investigation aimed generally at closing regulatory loopholes in the banking system need focus on over a decade of financial information regarding this President, his family, and his business affairs." Id. , at 687.

We granted certiorari in both cases and stayed the judgments below pending our decision. 589 U. S. ----, 140 S.Ct. 660, 205 L.Ed.2d 418 (2019).

II

A

The question presented is whether the subpoenas exceed the authority of the House under the Constitution. Historically, disputes over congressional demands for presidential documents have not ended up in court. Instead, they have been hashed out in the "hurly-burly, the give-and-take of the political process between the legislative and the executive." Hearings on S. 2170 et al. before the Subcommittee on Intergovernmental Relations of the Senate Committee on Government Operations, 94th Cong., 1st Sess., 87 (1975) (A. Scalia, Assistant Attorney General, Office of Legal Counsel).

That practice began with George Washington and the early Congress. In 1792, a House committee requested Executive Branch documents pertaining to General St. Clair's campaign against the Indians in the Northwest Territory, which had concluded in an utter rout of federal forces when they were caught by surprise near the present-day border between Ohio and Indiana. See T. Taylor, Grand Inquest: The Story of Congressional Investigations 19-23 (1955). Since this was the first such request from Congress, President Washington called a Cabinet meeting, wishing to take care that his response "be rightly conducted" because it could "become a precedent." 1 Writings of Thomas Jefferson 189 (P. Ford ed. 1892).

The meeting, attended by the likes of Alexander Hamilton, Thomas Jefferson, Edmund Randolph, and Henry Knox, ended with the Cabinet of "one mind": The House had authority to "institute inquiries" and "call for papers" but the President could "exercise a discretion" over disclosures, "communicat[ing] such papers as the public good would permit" and "refus[ing]" the rest. Id. , at 189-190. President Washington then dispatched Jefferson to speak to individual congressmen and "bring them by persuasion into the right channel." Id. , at 190. The discussions were apparently fruitful, as the House later narrowed its request and the documents were supplied without recourse to the courts. See 3 Annals of Cong. 536 (1792); Taylor, supra , at 24.

Jefferson, once he became President, followed Washington's precedent. In early 1807, after Jefferson had disclosed that "sundry persons" were conspiring to invade Spanish territory in North America with a private army, 16 Annals of Cong. 686-687, the House requested that the President produce any information in his possession touching on the conspiracy (except for information that would harm the public interest), id. , at 336, 345, 359. Jefferson chose not to divulge the entire "voluminous" correspondence on the subject, explaining that much of it was "private" or mere "rumors" and "neither safety nor justice" permitted him to "expos[e] names" apart from identifying the conspiracy's "principal actor": Aaron Burr. Id. , at 39-40. Instead of the entire correspondence, Jefferson sent Congress particular documents and a special message summarizing the conspiracy. Id. , at 39-43; see generally Vance, ante , --- U.S. at ---- - ----, 140 S.Ct. at 2421 - 2422. Neither Congress nor the President asked the Judiciary to intervene.

Ever since, congressional demands for the President's information have been resolved by the political branches without involving this Court. The Reagan and Clinton presidencies provide two modern examples:

During the Reagan administration, a House subcommittee subpoenaed all documents related to the Department of the Interior's decision whether to designate Canada a reciprocal country for purposes of the Mineral Lands Leasing Act. President Reagan directed that certain documents be withheld because they implicated his confidential relationship with subordinates. While withholding those documents, the administration made "repeated efforts" at accommodation through limited disclosures and testimony over a period of several months. 6 Op. of Office of Legal Counsel 751, 780 (1982). Unsatisfied, the subcommittee and its parent committee eventually voted to hold the Secretary of the Interior in contempt, and an innovative compromise soon followed: All documents were made available, but only for one day with no photocopying, minimal notetaking, and no participation by non-Members of Congress. Id. , at 780-781; see H. R. Rep. No. 97-898, pp. 3-8 (1982).

In 1995, a Senate committee subpoenaed notes taken by a White House attorney at a meeting with President Clinton's personal lawyers concerning the Whitewater controversy. The President resisted the subpoena on the ground that the notes were protected by attorney-client privilege, leading to "long and protracted" negotiations and a Senate threat to seek judicial enforcement of the subpoena. S. Rep. No. 104-204, pp. 16-17 (1996). Eventually the parties reached an agreement, whereby President Clinton avoided the threatened suit, agreed to turn over the notes, and obtained the Senate's concession that he had not waived any privileges. Ibid. ; see L. Fisher, Congressional Research Service, Congressional Investigations: Subpoenas and Contempt Power 16-18 (2003).

Congress and the President maintained this tradition of negotiation and compromise-without the involvement of this Court-until the present dispute. Indeed, from President Washington until now, we have never considered a dispute over a congressional subpoena for the President's records. And, according to the parties, the appellate courts have addressed such a subpoena only once, when a Senate committee subpoenaed President Nixon during the Watergate scandal. See infra , at 2032 - 2033 (discussing Senate Select Committee on Presidential Campaign Activities v. Nixon , 498 F.2d 725 (CADC 1974) (en banc)). In that case, the court refused to enforce the subpoena, and the Senate did not seek review by this Court.

This dispute therefore represents a significant departure from historical practice. Although the parties agree that this particular controversy is justiciable, we recognize that it is the first of its kind to reach this Court; that disputes of this sort can raise important issues concerning relations between the branches; that related disputes involving congressional efforts to seek official Executive Branch information recur on a regular basis, including in the context of deeply partisan controversy; and that Congress and the Executive have nonetheless managed for over two centuries to resolve such disputes among themselves without the benefit of guidance from us. Such longstanding practice " 'is a consideration of great weight' " in cases concerning "the allocation of power between [the] two elected branches of Government," and it imposes on us a duty of care to ensure that we not needlessly disturb "the compromises and working arrangements that [those] branches ... themselves have reached." NLRB v. Noel Canning , 573 U.S. 513, 524-526, 134 S.Ct. 2550, 189 L.Ed.2d 538 (2014) (quoting The Pocket Veto Case , 279 U.S. 655, 689, 49 S.Ct. 463, 73 L.Ed. 894 (1929) ). With that in mind, we turn to the question presented.

B

Congress has no enumerated constitutional power to conduct investigations or issue subpoenas, but we have held that each House has power "to secure needed information" in order to legislate. McGrain v. Daugherty , 273 U.S. 135, 161, 47 S.Ct. 319, 71 L.Ed. 580 (1927). This "power of inquiry-with process to enforce it-is an essential and appropriate auxiliary to the legislative function." Id. , at 174, 47 S.Ct. 319. Without information, Congress would be shooting in the dark, unable to legislate "wisely or effectively." Id. , at 175, 47 S.Ct. 319. The congressional power to obtain information is "broad" and "indispensable." Watkins v. United States , 354 U.S. 178, 187, 215, 77 S.Ct. 1173, 1 L.Ed.2d 1273 (1957). It encompasses inquiries into the administration of existing laws, studies of proposed laws, and "surveys of defects in our social, economic or political system for the purpose of enabling the Congress to remedy them." Id. , at 187, 77 S.Ct. 1173.

Because this power is "justified solely as an adjunct to the legislative process," it is subject to several limitations. Id. , at 197, 77 S.Ct. 1173. Most importantly, a congressional subpoena is valid only if it is "related to, and in furtherance of, a legitimate task of the Congress." Id. , at 187, 77 S.Ct. 1173. The subpoena must serve a "valid legislative purpose," Quinn v. United States , 349 U.S. 155, 161, 75 S.Ct. 668, 99 L.Ed. 964 (1955) ; it must "concern[ ] a subject on which legislation 'could be had,' "

Eastland v. United States Servicemen's Fund , 421 U.S. 491, 506, 95 S.Ct. 1813, 44 L.Ed.2d 324 (1975) (quoting McGrain , 273 U.S. at 177, 47 S.Ct. 319 ).

Furthermore, Congress may not issue a subpoena for the purpose of "law enforcement," because "those powers are assigned under our Constitution to the Executive and the Judiciary." Quinn , 349 U.S. at 161, 75 S.Ct. 668. Thus Congress may not use subpoenas to "try" someone "before [a] committee for any crime or wrongdoing." McGrain , 273 U.S. at 179, 47 S.Ct. 319. Congress has no " 'general' power to inquire into private affairs and compel disclosures," id. , at 173-174, 47 S.Ct. 319, and "there is no congressional power to expose for the sake of exposure," Watkins , 354 U.S. at 200, 77 S.Ct. 1173. "Investigations conducted solely for the personal aggrandizement of the investigators or to 'punish' those investigated are indefensible." Id. , at 187, 77 S.Ct. 1173.

Finally, recipients of legislative subpoenas retain their constitutional rights throughout the course of an investigation. See id. , at 188, 198, 77 S.Ct. 1173. And recipients have long been understood to retain common law and constitutional privileges with respect to certain materials, such as attorney-client communications and governmental communications protected by executive privilege. See, e.g. , Congressional Research Service, supra, at 16-18 (attorney-client privilege); Senate Select Committee , 498 F.2d at 727, 730-731 (executive privilege).

C

The President contends, as does the Solicitor General appearing on behalf of the United States, that the usual rules for congressional subpoenas do not govern here because the President's papers are at issue. They argue for a more demanding standard based in large part on cases involving the Nixon tapes-recordings of conversations between President Nixon and close advisers discussing the break-in at the Democratic National Committee's headquarters at the Watergate complex. The tapes were subpoenaed by a Senate committee and the Special Prosecutor investigating the break-in, prompting President Nixon to invoke executive privilege and leading to two cases addressing the showing necessary to require the President to comply with the subpoenas. See Nixon , 418 U.S. 683, 94 S.Ct. 3090, 41 L.Ed.2d 1039 ; Senate Select Committee , 498 F.2d 725.

Those cases, the President and the Solicitor General now contend, establish the standard that should govern the House subpoenas here. Quoting Nixon , the President asserts that the House must establish a "demonstrated, specific need" for the financial information, just as the Watergate special prosecutor was required to do in order to obtain the tapes. 418 U.S. at 713, 94 S.Ct. 3090. And drawing on Senate Select Committee -the D. C. Circuit case refusing to enforce the Senate subpoena for the tapes-the President and the Solicitor General argue that the House must show that the financial information is "demonstrably critical" to its legislative purpose. 498 F.2d at 731.

We disagree that these demanding standards apply here. Unlike the cases before us, Nixon and Senate Select Committee involved Oval Office communications over which the President asserted executive privilege. That privilege safeguards the public interest in candid, confidential deliberations within the Executive Branch; it is "fundamental to the operation of Government." Nixon , 418 U.S. at 708, 94 S.Ct. 3090. As a result, information subject to executive privilege deserves "the greatest protection consistent with the fair administration of justice." Id. , at 715, 94 S.Ct. 3090. We decline to transplant that protection root and branch to cases involving nonprivileged, private information, which by definition does not implicate sensitive Executive Branch deliberations.

The standards proposed by the President and the Solicitor General-if applied outside the context of privileged information-would risk seriously impeding Congress in carrying out its responsibilities. The President and the Solicitor General would apply the same exacting standards to all subpoenas for the President's information, without recognizing distinctions between privileged and nonprivileged information, between official and personal information, or between various legislative objectives. Such a categorical approach would represent a significant departure from the longstanding way of doing business between the branches, giving short shrift to Congress's important interests in conducting inquiries to obtain the information it needs to legislate effectively. Confounding the legislature in that effort would be contrary to the principle that:

"It is the proper duty of a representative body to look diligently into every affair of government and to talk much about what it sees. It is meant to be the eyes and the voice, and to embody the wisdom and will of its constituents. Unless Congress have and use every means of acquainting itself with the acts and the disposition of the administrative agents of the government, the country must be helpless to learn how it is being served." United States v. Rumely , 345 U.S. 41, 43, 73 S.Ct. 543, 97 L.Ed. 770 (1953) (internal quotation marks omitted).

Legislative inquiries might involve the President in appropriate cases; as noted, Congress's responsibilities extend to "every affair of government." Ibid. (internal quotation marks omitted). Because the President's approach does not take adequate account of these significant congressional interests, we do not adopt it.

D

The House meanwhile would have us ignore that these suits involve the President. Invoking our precedents concerning investigations that did not target the President's papers, the House urges us to uphold its subpoenas because they "relate[ ] to a valid legislative purpose" or "concern[ ] a subject on which legislation could be had." Brief for Respondent 46 (quoting Barenblatt v. United States , 360 U.S. 109, 127, 79 S.Ct. 1081, 3 L.Ed.2d 1115 (1959), and Eastland , 421 U.S. at 506, 95 S.Ct. 1813 ). That approach is appropriate, the House argues, because the cases before us are not "momentous separation-of-powers disputes." Brief for Respondent 1.

Largely following the House's lead, the courts below treated these cases much like any other, applying precedents that do not involve the President's papers. See 943 F.3d at 656-670 ; 940 F.3d at 724-742. The Second Circuit concluded that "this case does not concern separation of powers" because the House seeks personal documents and the President sued in his personal capacity. 943 F.3d at 669. The D. C. Circuit, for its part, recognized that "separation-of-powers concerns still linger in the air," and therefore it did not afford deference to the House. 940 F.3d at 725-726. But, because the House sought only personal documents, the court concluded that the case "present[ed] no direct interbranch dispute." Ibid.

The House's approach fails to take adequate account of the significant separation of powers issues raised by congressional subpoenas for the President's information. Congress and the President have an ongoing institutional relationship as the "opposite and rival" political branches established by the Constitution. The Federalist No. 51, at 349. As a result, congressional subpoenas directed at the President differ markedly from congressional subpoenas we have previously reviewed, e.g. , Barenblatt , 360 U.S. at 127, 79 S.Ct. 1081 ; Eastland , 421 U.S. at 506, 95 S.Ct. 1813, and they bear little resemblance to criminal subpoenas issued to the President in the course of a specific investigation, see Vance, ante , --- U.S. p., ----, 140 S.Ct., p. ---- ; Nixon , 418 U.S. 683, 94 S.Ct. 3090, 41 L.Ed.2d 1039. Unlike those subpoenas, congressional subpoenas for the President's information unavoidably pit the political branches against one another. Cf. In re Sealed Case , 121 F.3d 729, 753 (CADC 1997) ("The President's ability to withhold information from Congress implicates different constitutional considerations than the President's ability to withhold evidence in judicial proceedings.").

Far from accounting for separation of powers concerns, the House's approach aggravates them by leaving essentially no limits on the congressional power to subpoena the President's personal records. Any personal paper possessed by a President could potentially "relate to" a conceivable subject of legislation, for Congress has broad legislative powers that touch a vast number of subjects. Brief for Respondent 46. The President's financial records could relate to economic reform, medical records to health reform, school transcripts to education reform, and so on. Indeed, at argument, the House was unable to identify any type of information that lacks some relation to potential legislation. See Tr. of Oral Arg. 52-53, 62-65.

Without limits on its subpoena powers, Congress could "exert an imperious controul" over the Executive Branch and aggrandize itself at the President's expense, just as the Framers feared. The Federalist No. 71, at 484 (A. Hamilton); see id. , No. 48, at 332-333 (J. Madison); Bowsher v. Synar , 478 U.S. 714, 721-722, 727, 106 S.Ct. 3181, 92 L.Ed.2d 583 (1986). And a limitless subpoena power would transform the "established practice" of the political branches. Noel Canning , 573 U.S. at 524, 134 S.Ct. 2550 (internal quotation marks omitted). Instead of negotiating over information requests, Congress could simply walk away from the bargaining table and compel compliance in court.

The House and the courts below suggest that these separation of powers concerns are not fully implicated by the particular subpoenas here, but we disagree. We would have to be "blind" not to see what "[a]ll others can see and understand": that the subpoenas do not represent a run-of-the-mill legislative effort but rather a clash between rival branches of government over records of intense political interest for all involved. Rumely , 345 U.S. at 44, 73 S.Ct. 543 (quoting Child Labor Tax Case , 259 U.S. 20, 37, 42 S.Ct. 449, 66 L.Ed. 817 (1922) (Taft, C. J.)).

The interbranch conflict here does not vanish simply because the subpoenas seek personal papers or because the President sued in his personal capacity. The President is the only person who alone composes a branch of government. As a result, there is not always a clear line between his personal and official affairs. "The interest of the man" is often "connected with the constitutional rights of the place." The Federalist No. 51, at 349. Given the close connection between the Office of the President and its occupant, congressional demands for the President's papers can implicate the relationship between the branches regardless whether those papers are personal or official. Either way, a demand may aim to harass the President or render him "complaisan[t] to the humors of the Legislature." Id. , No. 71, at 483. In fact, a subpoena for personal papers may pose a heightened risk of such impermissible purposes, precisely because of the documents' personal nature and their less evident connection to a legislative task. No one can say that the controversy here is less significant to the relationship between the branches simply because it involves personal papers. Quite the opposite. That appears to be what makes the matter of such great consequence to the President and Congress.

In addition, separation of powers concerns are no less palpable here simply because the subpoenas were issued to third parties. Congressional demands for the President's information present an interbranch conflict no matter where the information is held-it is, after all, the President's information. Were it otherwise, Congress could sidestep constitutional requirements any time a President's information is entrusted to a third party-as occurs with rapidly increasing frequency. Cf. Carpenter v. United States , 585 U. S. ----, ----, ----, 138 S.Ct. 2206, 2219, 2220, 201 L.Ed.2d 507(2018). Indeed, Congress could declare open season on the President's information held by schools, archives, internet service providers, e-mail clients, and financial institutions. The Constitution does not tolerate such ready evasion; it "deals with substance, not shadows." Cummings v. Missouri , 4 Wall. 277, 325, 18 L.Ed. 356 (1867).

E

Congressional subpoenas for the President's personal information implicate weighty concerns regarding the separation of powers. Neither side, however, identifies an approach that accounts for these concerns. For more than two centuries, the political branches have resolved information disputes using the wide variety of means that the Constitution puts at their disposal. The nature of such interactions would be transformed by judicial enforcement of either of the approaches suggested by the parties, eroding a "[d]eeply embedded traditional way[ ] of conducting government." Youngstown Sheet & Tube Co. , 343 U.S. at 610, 72 S.Ct. 863 (Frankfurter, J., concurring).

A balanced approach is necessary, one that takes a "considerable impression" from "the practice of the government," McCulloch v. Maryland , 4 Wheat. 316, 401, 4 L.Ed. 579 (1819) ; see Noel Canning , 573 U.S. at 524-526, 134 S.Ct. 2550, and "resist[s]" the "pressure inherent within each of the separate Branches to exceed the outer limits of its power," INS v. Chadha , 462 U.S. 919, 951, 103 S.Ct. 2764, 77 L.Ed.2d 317 (1983). We therefore conclude that, in assessing whether a subpoena directed at the President's personal information is "related to, and in furtherance of, a legitimate task of the Congress," Watkins , 354 U.S. at 187, 77 S.Ct. 1173, courts must perform a careful analysis that takes adequate account of the separation of powers principles at stake, including both the significant legislative interests of Congress and the "unique position" of the President, Clinton , 520 U.S. at 698, 117 S.Ct. 1636 (internal quotation marks omitted). Several special considerations inform this analysis.

First, courts should carefully assess whether the asserted legislative purpose warrants the significant step of involving the President and his papers. " '[O]ccasion[s] for constitutional confrontation between the two branches' should be avoided whenever possible." Cheney v. United States Dist. Court for D. C. , 542 U.S. 367, 389-390, 124 S.Ct. 2576, 159 L.Ed.2d 459 (2004) (quoting Nixon , 418 U.S. at 692, 94 S.Ct. 3090 ). Congress may not rely on the President's information if other sources could reasonably provide Congress the information it needs in light of its particular legislative objective. The President's unique constitutional position means that Congress may not look to him as a "case study" for general legislation. Cf. 943 F.3d at 662-663, n. 67.

Unlike in criminal proceedings, where "[t]he very integrity of the judicial system" would be undermined without "full disclosure of all the facts," Nixon , 418 U.S. at 709, 94 S.Ct. 3090, efforts to craft legislation involve predictive policy judgments that are "not hamper[ed] ... in quite the same way" when every scrap of potentially relevant evidence is not available, Cheney , 542 U.S. at 384, 124 S.Ct. 2576 ; see Senate Select Committee , 498 F.2d at 732. While we certainly recognize Congress's important interests in obtaining information through appropriate inquiries, those interests are not sufficiently powerful to justify access to the President's personal papers when other sources could provide Congress the information it needs.

Second, to narrow the scope of possible conflict between the branches, courts should insist on a subpoena no broader than reasonably necessary to support Congress's legislative objective. The specificity of the subpoena's request "serves as an important safeguard against unnecessary intrusion into the operation of the Office of the President." Cheney , 542 U.S. at 387, 124 S.Ct. 2576.

Third, courts should be attentive to the nature of the evidence offered by Congress to establish that a subpoena advances a valid legislative purpose. The more detailed and substantial the evidence of Congress's legislative purpose, the better. See Watkins , 354 U.S. at 201, 205, 77 S.Ct. 1173 (preferring such evidence over "vague" and "loosely worded" evidence of Congress's purpose). That is particularly true when Congress contemplates legislation that raises sensitive constitutional issues, such as legislation concerning the Presidency. In such cases, it is "impossible" to conclude that a subpoena is designed to advance a valid legislative purpose unless Congress adequately identifies its aims and explains why the President's information will advance its consideration of the possible legislation. Id. , at 205-206, 214-215.

Fourth, courts should be careful to assess the burdens imposed on the President by a subpoena. We have held that burdens on the President's time and attention stemming from judicial process and litigation, without more, generally do not cross constitutional lines. See Vance, ante , --- U.S. at ---- - ----, 140 S.Ct. at 2425 - 2427 ; Clinton , 520 U.S. at 704-705, 117 S.Ct. 1636. But burdens imposed by a congressional subpoena should be carefully scrutinized, for they stem from a rival political branch that has an ongoing relationship with the President and incentives to use subpoenas for institutional advantage.

Other considerations may be pertinent as well; one case every two centuries does not afford enough experience for an exhaustive list.

When Congress seeks information "needed for intelligent legislative action," it "unquestionably" remains "the duty of all citizens to cooperate." Watkins , 354 U.S. at 187, 77 S.Ct. 1173 (emphasis added). Congressional subpoenas for information from the President, however, implicate special concerns regarding the separation of powers. The courts below did not take adequate account of those concerns. The judgments of the Courts of Appeals for the D. C. Circuit and the Second Circuit are vacated, and the cases are remanded for further proceedings consistent with this opinion.

It is so ordered.

Justice THOMAS, dissenting.

Three Committees of the U. S. House of Representatives issued subpoenas to several accounting and financial firms to obtain the personal financial records of the President, his family, and several of his business entities. The Committees do not argue that these subpoenas were issued pursuant to the House's impeachment power. Instead, they argue that the subpoenas are a valid exercise of their legislative powers.

Petitioners challenge the validity of these subpoenas. In doing so, they call into question our precedents to the extent that they allow Congress to issue legislative subpoenas for the President's private, nonofficial documents. I would hold that Congress has no power to issue a legislative subpoena for private, nonofficial documents-whether they belong to the President or not. Congress may be able to obtain these documents as part of an investigation of the President, but to do so, it must proceed under the impeachment power. Accordingly, I would reverse the judgments of the Courts of Appeals.

I

I begin with the Committees' claim that the House's legislative powers include the implied power to issue legislative subpoenas. Although the Founders understood that the enumerated powers in the Constitution included implied powers, the Committees' test for the scope of those powers is too broad.

"The powers of the legislature are defined, and limited; and that those limits may not be mistaken, or forgotten, the constitution is written." Marbury v. Madison , 1 Cranch 137, 176, 5 U.S. 137, 2 L.Ed. 60 (1803). The structure of limited and enumerated powers in our Constitution denotes that "[o]ur system of government rests on one overriding principle: All power stems from the consent of the people." U. S. Term Limits, Inc. v. Thornton , 514 U.S. 779, 846, 115 S.Ct. 1842, 131 L.Ed.2d 881 (1995) (THOMAS, J., dissenting). As a result, Congress may exercise only those powers given by the people of the States through the Constitution.

The Founders nevertheless understood that an enumerated power could necessarily bring with it implied powers. The idea of implied powers usually arises in the context of the Necessary and Proper Clause, which gives Congress the power to "make all Laws which shall be necessary and proper for carrying into Execution the foregoing Powers, and all other Powers vested by this Constitution in the Government of the United States, or in any Department or Officer thereof." Art. I, § 8, cl. 18. As I have previously explained, the Necessary and Proper Clause simply "made explicit what was already implicit in the grant of each enumerated power." United States v. Comstock , 560 U.S. 126, 161, 130 S.Ct. 1949, 176 L.Ed.2d 878 (2010) (dissenting opinion). That is, "the grant of a general power includes the grant of incidental powers for carrying it out." Bray, "Necessary and Proper" and "Cruel and Unusual": Hendiadys in the Constitution, 102 Va. L. Rev. 687, 741 (2016).

The scope of these implied powers is very limited. The Constitution does not sweep in powers "of inferior importance, merely because they are inferior." McCulloch v. Maryland , 4 Wheat. 316, 408, 4 L.Ed. 579 (1819). Instead, Congress "can claim no powers which are not granted to it by the constitution, and the powers actually granted, must be such as are expressly given, or given by necessary implication." Martin v. Hunter's Lessee , 1 Wheat. 304, 326, 4 L.Ed. 97 (1816). In sum, while the Committees' theory of an implied power is not categorically wrong, that power must be necessarily implied from an enumerated power.

II

At the time of the founding, the power to subpoena private, nonofficial documents was not included by necessary implication in any of Congress' legislative powers. This understanding persisted for decades and is consistent with the Court's first decision addressing legislative subpoenas, Kilbourn v. Thompson , 103 U.S. 168, 26 L.Ed. 377 (1881). The test that this Court created in McGrain v. Daugherty , 273 U.S. 135, 47 S.Ct. 319, 71 L.Ed. 580 (1927), and the majority's variation on that standard today, are without support as applied to private, nonofficial documents.

A

The Committees argue that Congress wields the same investigatory powers that the British Parliament did at the time of the founding. But this claim overlooks one of the fundamental differences between our Government and the British Government: Parliament was supreme. Congress is not.

I have previously explained that "the founding generation did not subscribe to Blackstone's view of parliamentary supremacy." Department of Transportation v. Association of American Railroads , 575 U.S. 43, 74, 135 S.Ct. 1225, 191 L.Ed.2d 153 (2015) (opinion concurring in judgment). "Parliament's violations of the law of the land had been a significant complaint of the American Revolution." Id., at 74-75, 135 S.Ct. 1225. "And experiments in legislative supremacy in the States had confirmed the idea that even the legislature must be made subject to the law." Id. , at 75, 135 S.Ct. 1225.

James Wilson, signer of the Constitution and future Justice, explained this difference to the Pennsylvania ratifying convention: "Blackstone will tell you, that in Britain [the supreme power] is lodged in the British Parliament; and I believe there is no writer on the other side of the Atlantic" who thought otherwise. 2 Documentary History of the Ratification of the Constitution 471 (M. Jensen ed. 1976) (Documentary History). In the United States, however, "the supreme, absolute, and uncontrollable authority, remains with the people." Id. , at 472. And "[t]he Constitution plainly sets forth the 'few and defined' powers that Congress may exercise." Comstock , 560 U.S. at 159, 130 S.Ct. 1949 (THOMAS, J., dissenting); see also McCulloch , 4 Wheat. at 405 ; Marbury , 1 Cranch at 176. This significant difference means that Parliament's powers and Congress' powers are not necessarily the same.

In fact, the plain text of the Constitution makes clear that they are not. The Constitution expressly denies to Congress some of the powers that Parliament exercised. Article I, for example, prohibits bills of attainder, § 9, cl. 3, which Parliament used to "sentenc[e] to death one or more specific persons." United States v. Brown , 381 U.S. 437, 441, 85 S.Ct. 1707, 14 L.Ed.2d 484 (1965). A legislature can hardly be considered supreme if it lacks the power to pass bills of attainder, which Justice Story called the "highest power of sovereignty." 3 Commentaries on the Constitution of the United States § 1338, p. 210 (1833). Relatedly, the Constitution prohibits ex post facto laws, § 9, cl. 3, reinforcing the fact that Congress' power to punish is limited. And in a system in which Congress is not supreme, the individual protections in the Bill of Rights, such as the prohibition on unreasonable searches and seizures, meaningfully constrain Congress' power to compel documents from private citizens. Cf. 1 St. George Tucker, Blackstone's Commentaries 203-205, n. § (1803); see also D. Currie, The Constitution in Congress: The Federalist Period, 1789-1801, p. 268 (1997).

Furthermore, Kilbourn -this Court's first decision on the constitutionality of legislative subpoenas-emphasized that Parliament had more powers than Congress. There, the congressional respondents relied on Parliament's investigatory power to support a legislative subpoena for testimony and documents. The Court rejected the analogy because the judicial powers of the House of Commons-the lower house of Parliament-exceeded the judicial functions of the House of Representatives. Kilbourn , supra, at 189. At bottom, Kilbourn recognized that legislative supremacy was decisively rejected in the framing and ratification of our Constitution, which casts doubt on the Committees' claim that they have power to issue legislative subpoenas to private parties.

B

The subpoenas in these cases also cannot be justified based on the practices of 18th-century American legislatures. Amici supporting the Committees resist this conclusion, but the examples they cite materially differ from the legislative subpoenas at issue here.

First, amici cite investigations in which legislatures sought to compel testimony from government officials on government matters. The subjects included military affairs, taxes, government finances, and the judiciary. Potts, Power of Legislative Bodies To Punish for Contempt, 74 U. Pa. L. Rev. 691, 708, 709, 710, 716-717 (1926) (Potts); see also E. Eberling, Congressional Investigations: A Study of the Origin and Development of the Power of Congress To Investigate and Punish for Contempt 18 (1928) (Eberling). But the information sought in these examples was official, not private. Underscoring this distinction, at least one revolutionary-era State Constitution permitted the legislature to "call for all public or official papers and records, and send for persons, whom they may judge necessary in the course of their inquiries, concerning affairs relating to the public interest." Md. Const., Art. X (1776) (emphasis added).

Second, 18th-century legislatures conducted nonlegislative investigations. For example, the New York colonial legislature tasked one committee with investigating a nuisance complaint and gave it the "power to send for persons, papers and records." Eberling 18; see also id. , at 19 (investigation of a government contract obtained by alleged wrongdoing); Potts 716 (investigation of armed resistance). But to describe this category is to distinguish it. Here, the Committees assert only a legislative purpose.

Third, colonial and state legislatures investigated and punished insults, libels, and bribery of members. For example, the Pennsylvania colonial assembly investigated "injurious charges, and slanderous Aspersions against the Conduct of the late Assembly" made by two individuals. Id. , at 710 (internal quotation marks omitted); see also id. , at 717; Eberling 20-21. But once again, to describe this category is to distinguish it because the subpoenas here are justified only as incidental to the power to legislate, not the power to punish libels or bribery. In short, none of the examples from 18th-century colonial and state history support a power to issue a legislative subpoena for private, nonofficial documents.

C

Given that Congress has no exact precursor in England or colonial America, founding-era congressional practice is especially informative about the scope of implied legislative powers. Thus, it is highly probative that no founding-era Congress issued a subpoena for private, nonofficial documents. Although respondents could not identify the first such legislative subpoena at oral argument, Tr. of Oral Arg. 56, Congress began issuing them by the end of the 1830s. However, the practice remained controversial in Congress and this Court throughout the first century of the Republic.

1

In an attempt to establish the power of Congress to issue legislative subpoenas, the Committees point to an investigation of Government affairs and an investigation under one of Congress' enumerated privileges. Both precedents are materially different from the subpoenas here.

In 1792, the House authorized a Committee to investigate a failed military expedition led by General Arthur St. Clair. 3 Hinds' Precedents of the House of Representatives of the United States § 1725, pp. 79-80 (1907) (Hinds). The Committee was "empowered to call for such persons, papers and records as may be necessary to assist their inquiries." Ibid. But the Committee never subpoenaed private, nonofficial documents, which is telling. Whereas a subpoena for Government documents does not implicate concerns about property rights or the Fourth Amendment "right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures," a subpoena for private, nonofficial documents raises those questions. Thus, the power to subpoena private documents, which the Committee did not exercise, is a far greater power and much less likely to be implied in Congress' legislative powers.

In 1832, the House investigated Representative Samuel Houston for assaulting Representative William Stanberry. Stanberry had accused Houston of collusion with Secretary of War John Eaton in connection with a bid for a Government contract, and the House initiated an investigation into the truthfulness of Stanberry's accusation. 8 Cong. Deb. 2550, 3022-3023 (1832). The House subpoenaed witnesses to testify, and one of them brought official correspondence between the Secretary of War and the President. H. R. Rep. No. 502, 22d Cong., 1st Sess. 64, 66-67 (1832). But official documents are obviously different from nonofficial documents. Moreover, the subpoenas were issued pursuant to the House's enumerated privilege of punishing its own Members, Art. I, § 5, not as part of its legislative powers. Because these subpoenas were not issued pursuant to a legislative power, they do not aid the Committees' case.

2

As late as 1827, a majority of the House declined to authorize the Committee on Manufactures to subpoena documents, amid concerns that it was unprecedented. During the debate over the resolution, one opponent remarked that "[t]here is no instance under this Government, within my recollection, where this power has been given for the mere purpose of enabling a committee of this House to adjust the details of an ordinary bill." 4 Cong. Deb. 865-866 (Rep. Strong); see also id. , at 862 (referring to "authority to bring any citizens of the United States ... whom they might choose to send for, and compel them to give answers to every inquiry which should be addressed to them" as "very extraordinary"). Another opponent stated that the Committee had requested a power that had "not heretofore been thought necessary to enable that Committee to acquire correct information." Id. , at 866 (Rep. Storrs). A third called it "not only novel and extraordinary, but wholly unnecessary." Id. , at 874 (Rep. Stewart); see also id. , at 884-885 (Rep. Wright). No supporter of the resolution offered a specific precedent for doing so, and the House ultimately authorized the Committee to send for persons only. Id. , at 889-890.

This debate is particularly significant because of the arguments made by both sides. Proponents made essentially the same arguments the Committees raise here-that the power to send for persons and papers was necessary to inform Congress as it legislated. Id. , at 871 (Rep. Livingston). Opponents argued that this power was not part of any legislative function. Id. , at 865-866 (Rep. Strong). They also argued that the House of Commons provided no precedent because Congress was a body of limited and enumerated powers. Id. , at 882 (Rep. Wood). And in the end, the opponents prevailed. Thus, through 1827, the idea that Congress had the implied power to issue subpoenas for private documents was considered "novel," "extraordinary," and "unnecessary." Id. , at 874.

3

By the end of the 1830s, Congress began issuing legislative subpoenas for private, nonofficial documents. See Eberling 123-126. Still, the power to demand information from private parties during legislative investigations remained controversial.

In 1832, the House authorized a Committee to "inspect the books, and to examine into the proceedings of the Bank of the United States, to report thereon, and to report whether the provisions of its charter have been violated or not." 8 Cong. Deb. 2160, 2164. The House gave the Committee "power to send for persons and papers." Id., at 2160. The power to inspect the books of the Bank of the United States is not itself a clear example of a legislative subpoena for private, nonofficial documents, because the Bank was a federally chartered corporation and was required to allow Congress to inspect its books. App. to 8 Cong. Deb. 54 (1833). The investigation itself appears to have ranged more widely, however, leading Congressman John Quincy Adams to criticize

"investigations which must necessarily implicate not only the president and directors of the bank, and their proceedings, but the rights, the interests, the fortunes, and the reputation of individuals not responsible for those proceedings, and whom neither the committee nor the House had the power to try, or even accuse before any other tribunal." Ibid.

Adams continued that such an investigation "bears all the exceptionable and odious properties of general warrants and domiciliary visits." Ibid. He also objected that the Committee's investigation of the Bank was tantamount to punishment and thus was in tension with the constitutional prohibitions on "passing any bill of attainder [or] ex post facto law." Id., at 60. Thus, even when Congress authorized a Committee to send for private papers, the constitutionality of doing so was questioned.

An 1859 Senate investigation, which the Court of Appeals cited as precedent, underscores that legislative subpoenas to private parties were a 19th-century innovation. Following abolitionist John Brown's raid at Harper's Ferry, Senate Democrats opened an investigation apparently designed to embarrass opponents of slavery. As part of the investigation, they called private individuals to testify. Senator Charles Sumner, a leading opponent of slavery, railed against the proceedings:

"I know it is said that this power is necessary in aid of legislation . I deny the necessity. Convenient , at times, it may be; but necessary , never . We do not drag the members of the Cabinet or the President to testify before a committee in aid of legislation ; but I say, without hesitation, they can claim no immunity which does not belong equally to the humblest citizen." Cong. Globe, 36th Cong., 1st Sess., 3007 (1860).

Sumner also addressed the matter of Parliament's powers, calling them "more or less inapplicable" because "[w]e live under a written Constitution, with certain specified powers; and all these are restrained by the tenth amendment." Ibid. For Sumner, as for Adams, the power to issue legislative subpoenas to private parties was a "dangerous absurdity" with no basis in the text or history of the Constitution. Ibid.

4

When this Court first addressed a legislative subpoena, it refused to uphold it. After casting doubt on legislative subpoenas generally, the Court in Kilbourn v. Thompson , 103 U.S. 168, held that the subpoena at issue was unlawful because it sought to investigate private conduct.

In 1876, the House created a special Committee to investigate the failure of a major bank, which caused the loss of federal funds and related to financial speculation in the District of Columbia. Id. , at 171. The Committee issued a subpoena to Kilbourn, an employee of the bank. Id., at 172. When he refused to answer questions or produce documents, the House held him in contempt and arrested him. Id. , at 173. After his release, he sued the Speaker, several Committee members, and the Sergeant at Arms for damages.

The Court discussed the arguments for an "impli[ed]" power to issue legislative subpoenas. Id. , at 183. As the Court saw it, there were two arguments: "1, its exercise by the House of Commons of England ... and, 2d, the necessity of such a power to enable the two Houses of Congress to perform the duties and exercise the powers which the Constitution has conferred on them." Ibid.

The Court rejected the first argument. It found "no difference of opinion as to [the] origin" of the House of Commons' subpoena power:

"[T]he two Houses of Parliament were each courts of judicature originally, which, though divested by usage, and by statute, probably, of many of their judicial functions, have yet retained so much of that power as enables them, like any other court, to punish for a contempt of these privileges and authority that the power rests." Id., at 184.

Even after the division of Parliament into two houses, "[t]o the Commons was left the power of impeachment, and, perhaps, others of a judicial character, and jointly they exercised, until a very recent period, the power of passing bills of attainder for treason and other high crimes which are in their nature punishment for crime declared judicially by the High Court of Parliament." Ibid. By contrast, the House of Representatives "is in no sense a court, ... exercises no functions derived from its once having been a part of the highest court of the realm," and has no judicial functions beyond "punishing its own members and determining their election." Id. , at 189. The Court thus rejected the notion that Congress inherited from Parliament an implied power to issue legislative subpoenas.

The Court did not reach a conclusion on the second theory that a legislative subpoena power was necessary for Congress to carry out its legislative duties. But it observed that, based on British judicial opinions, not "much aid [is] given to the doctrine, that this power exists as one necessary to enable either House of Congress to exercise successfully their function of legislation." Ibid. The Court referred to a collection of 18th- and 19th-century English decisions grounding the Parliamentary subpoena power in that body's judicial origins. Id., at 184-189 (citing Burdett v. Abbott , 104 Eng. Rep. 501 (K. B. 1811); Brass Crosby's Case , 95 Eng. Rep. 1005 (C. P. 1771); Stockdale v. Hansard , 112 Eng. Rep. 1112 (K. B. 1839); and Kielley v. Carson , 13 Eng. Rep. 225 (P. C. 1841)). The Court placed particular emphasis on Kielley , in which the Privy Council held that the Legislative Assembly of Newfoundland lacked a power to punish for contempt. The Privy Council expressly stated that the House of Commons could punish for contempt

" 'not because it is a representative body with legislative functions, but by virtue of ancient usage and prescription ... which forms a part of the common law of the land, and according to which the High Court of Parliament before its division, and the Houses of Lords and Commons since, are invested with many privileges, that of punishment for contempt being one.' " Kilbourn , 103 U.S. at 188-189.

This Court also noted that the Privy Council "discusse[d] at length the necessity of this power in a legislative body for its protection, and to enable it to discharge its law-making functions, and decide[d] against the proposition." Id. , at 189. Although the Court did not have occasion to decide whether the legislative subpoena in that case was necessary to the exercise of Congress' legislative powers, its discussion strongly suggests the subpoena was unconstitutional.

The Court instead based its decision on the fact that the subpoena at issue "ma[de] inquiry into the private affairs of the citizen." Id. , at 190. Such a power, the Court reasoned, "is judicial and not legislative," id. , at 193, and "no judicial power is vested in the Congress or either branch of it, save in the cases" of punishing Members, compelling Members' attendance, judging elections and qualifications, and impeachment and trial, id. , at 192-193. Notably, the Court found no indication that the House "avowed to impeach the secretary," or else "the whole aspect of the case would have been changed." Id. , at 193. Even though the Court decided Kilbourn narrowly, it clearly entertained substantial doubts about the constitutionality of legislative subpoenas for private documents.

D

Nearly half a century later, in McGrain v. Daugherty , the Court reached the question reserved in Kilbourn -whether Congress has the power to issue legislative subpoenas. It rejected Kilbourn 's reasoning and upheld the power to issue legislative subpoenas as long as they were relevant to a legislative power. Although McGrain involved oral testimony, the Court has since extended this test to subpoenas for private documents. The Committees rely on McGrain , but this line of cases misunderstands both the original meaning of Article I and the historical practice underlying it.

1

Shortly before Attorney General Harry Daugherty resigned in 1924, the Senate opened an investigation into his " 'alleged failure' " to prosecute monopolists, the protagonists of the Teapot Dome scandal, and " 'many others.' " McGrain , 273 U.S. at 151, 47 S.Ct. 319. The investigating Committee issued subpoenas to Daugherty's brother, Mally, who refused to comply and was arrested in Ohio for failure to testify. Id. , at 152-154. Mally petitioned for a writ of habeas corpus, and the District Court discharged him, based largely on Kilbourn . Ex parte Daugherty , 299 F. 620 (SD Ohio 1924). The Deputy Sergeant at Arms who arrested Mally directly appealed to this Court, which reversed.

The Court concluded that, "[i]n actual legislative practice[,] power to secure needed information by [investigating and compelling testimony] has long been treated as an attribute of the power to legislate." McGrain , 273 U.S. at 161, 47 S.Ct. 319. The Court specifically found that "[i]t was so regarded in the British Parliament and in the Colonial legislatures before the American Revolution" and that "a like view has prevailed and been carried into effect in both houses of Congress and in most of the state legislatures." Ibid. But the authority cited by the Court did not support that proposition. The Court cited the 1792 investigation of St. Clair's defeat, in which it appears no subpoena was issued, supra, at 2040 - 2041, and the 1859 Senate investigation of John Brown's raid on Harper's Ferry, which led to an impassioned debate. 273 U.S. at 162-164, 47 S.Ct. 319. Thus, for the reasons explained above, the examples relied on in McGrain are materially different from issuing a legislative subpoena for private, nonofficial documents. See supra, at 2040, 2041 - 2042.

The Court acknowledged Kilbourn, but erroneously distinguished its discussion regarding the constitutionality of legislative subpoenas as immaterial dicta. McGrain , supra , at 170-171, 47 S.Ct. 319 (quoting Kilbourn , supra, at 189 ). The Court concluded that "the two houses of Congress, in their separate relations, possess not only such powers as are expressly granted to them by the Constitution, but such auxiliary powers as are necessary and appropriate to make the express powers effective." McGrain , supra, at 173, 47 S.Ct. 319.

Instead of relying on Kilbourn 's analysis, McGrain developed a test that rested heavily on functional considerations. The Court wrote that "[a] legislative body cannot legislate wisely or effectively in the absence of information respecting the conditions which the legislation is intended to affect or change." 273 U.S. at 175, 47 S.Ct. 319. Because "mere requests for such information often are unavailing, and also that information which is volunteered is not always accurate or complete," "some means of compulsion are essential to obtain what is needed." Ibid.

The Court thus concluded that Congress could issue legislative subpoenas, provided that "the purpose for which the witness's testimony was sought was to obtain information in aid of the legislative function." Id., at 176, 47 S.Ct. 319. The Court has since applied this test to subpoenas for papers without any further analysis of the text or history of the Constitution. See Eastland v. United States Servicemen's Fund , 421 U.S. 491, 504-505, 95 S.Ct. 1813, 44 L.Ed.2d 324 (1975). The majority today modifies that test for cases involving the President, but it leaves the core of the power untouched. Ante , at 2035 - 2036.

2

The opinion in McGrain lacks any foundation in text or history with respect to subpoenas for private, nonofficial documents. It fails to recognize that Congress, unlike Parliament, is not supreme. It does not cite any specific precedent for issuing legislative subpoenas for private documents from 18th-century colonial or state practice. And it identifies no founding-era legislative subpoenas for private documents.

Since McGrain , the Court has pared back Congress' authority to compel testimony and documents. It has held that certain convictions of witnesses for contempt of Congress violated the Fifth Amendment. See Watkins v. United States , 354 U.S. 178, 77 S.Ct. 1173, 1 L.Ed.2d 1273 (1957) (Due Process Clause); Quinn v. United States , 349 U.S. 155, 75 S.Ct. 668, 99 L.Ed. 964 (1955) (Self-Incrimination Clause); see also Barenblatt v. United States , 360 U.S. 109, 153-154, 79 S.Ct. 1081, 3 L.Ed.2d 1115 (1959) (Black, J., dissenting). It has also affirmed the reversal of a conviction on the ground that the Committee lacked authority to issue the subpoena. See United States v. Rumely , 345 U.S. 41, 73 S.Ct. 543, 97 L.Ed. 770 (1953). And today, it creates a new four-part, nonexhaustive test for cases involving the President. Ante , at 2035 - 2036. Rather than continue our trend of trying to compensate for McGrain , I would simply decline to apply it in these cases because it is readily apparent that the Committees have no constitutional authority to subpoena private, nonofficial documents.

III

If the Committees wish to investigate alleged wrongdoing by the President and obtain documents from him, the Constitution provides Congress with a special mechanism for doing so: impeachment.

A

It is often acknowledged, "if only half-heartedly honored," that one of the motivating principles of our Constitution is the separation of powers. Association of American Railroads , 575 U.S. at 74, 135 S.Ct. 1225 (THOMAS, J., concurring in judgment). The Framers recognized that there are three forms of governmental power: legislative, executive and judicial. The Framers also created three branches: Congress, the President, and the Judiciary. The three powers largely align with the three branches. To a limited extent, however, the Constitution contains "a partial intermixture of those departments for special purposes." The Federalist No. 66, p. 401 (C. Rossiter ed. 1961) (A. Hamilton). One of those special purposes is the system of checks and balances, and impeachment is one of those checks.

The Constitution grants the House "the sole Power of Impeachment," Art. I, § 2, cl. 5, and it specifies that the President may be impeached for "Treason, Bribery, or other high Crimes and Misdemeanors," Art. II, § 4. The founding generation understood impeachment as a check on Presidential abuses. In response to charges that impeachment "confounds legislative and judiciary authorities in the same body," Alexander Hamilton called it "an essential check in the hands of [Congress] upon the encroachments of the executive." The Federalist No. 66, at 401-402. And, in the Virginia ratifying convention, James Madison identified impeachment as a check on Presidential abuse of the treaty power. 10 Documentary History 1397.

B

The power to impeach includes a power to investigate and demand documents. Impeachments in the States often involved an investigation. In 1781, the Virginia Legislature began what Edmund Randolph called an "impeachment" of then-Governor Thomas Jefferson. P. Hoffer & N. Hull, Impeachment in America, 1635-1805, p. 85 (1984). This "most publicized and far-reaching impeachment inquiry for incompetence" included an " 'inquir[y] into the conduct of the executive of this state for the last two months.' " Ibid. The legislatures of New Jersey, id. , at 92, and Pennsylvania, id. , at 93-95, similarly investigated officials through impeachment proceedings.

Reinforcing this understanding, the founding generation repeatedly referred to impeachment as an "inquest." See 4 Debates on the Constitution 44 (J. Elliot ed. 1854) (speech of A. Maclaine) (referring to the House as "the grand inquest of the Union at large"); The Federalist No. 65, at 397 (Hamilton) (referring to the House as "a method of NATIONAL INQUEST "); 2 Records of the Federal Convention 154 (M. Farrand ed. 1911) (record from the Committee of Detail stating that "[t]he House of Representatives shall be the grand Inquest of this Nation; and all Impeachments shall be made by them"); see also Mass. Const., ch. 1, § 3, Art. VI (1780) (referring to the Massachusetts House of Representatives as "the Grand Inquest of this Commonwealth"). At the time, an "inquest" referred to an "[i]nquiry, especially that made by a Jury" or "the Jury itself." N. Bailey, Universal Etymological Dictionary (22d ed. 1770).

The Founders were also aware of the contemporaneous impeachment of Warren Hastings in England, in which the House of Commons heard witnesses before voting to impeach. P. Marshall, The Impeachment of Warren Hastings 40-41, 58 (1965). In the first impeachment under the new Constitution, Congressmen cited the Hastings impeachment as precedent for several points, including the power to take testimony before impeaching. 7 Annals of Cong. 456 (1797) (Rep. Rutledge); id. , at 459 (Rep. Sitgreaves); id., at 460 (Rep. Gallatin).

Other evidence from the 1790s confirms that the power to investigate includes the power to demand documents. When the House of Representatives sought documents related to the Jay Treaty from President George Washington, he refused to provide them on the ground that the House had no legislative powers relating to the ratification of treaties. 5 Annals of Cong. 760-762 (1796). But he carefully noted that "[i]t does not occur that the inspection of the papers asked for can be relative to any purpose under the cognizance of the House of Representatives, except that of an impeachment; which the resolution has not expressed." Id., at 760. In other words, he understood that the House can demand documents as part of its power to impeach.

This Court has also long recognized the power of the House to demand documents. Even as it questioned the power to issue legislative subpoenas, the Court in Kilbourn acknowledged the ability to "compel the attendance of witnesses, and their answer to proper questions" when "the question of ... impeachment is before either body acting in its appropriate sphere on that subject." 103 U.S. at 190.

I express no view today on the boundaries of the power to demand documents in connection with impeachment proceedings. But the power of impeachment provides the House with authority to investigate and hold accountable Presidents who commit high crimes or misdemeanors. That is the proper path by which the Committees should pursue their demands.

IV

For nearly two centuries, until the 1970s, Congress never attempted to subpoena documents to investigate wrongdoing by the President outside the context of impeachment. Congress investigated Presidents without opening impeachment proceedings. See, e.g., 2 Hinds § 1596, at 1043-1045 (President James Buchanan). But it never issued a subpoena for private, nonofficial documents as part of those non-impeachment inquiries. Perhaps most strikingly, one proposed request for official documents from the President was amended after objection so that it " 'requested' " them rather than " 'direct[ing]' " the President to provide them. 3 id. , § 1895, at 193.

Insisting that the House proceed through its impeachment power is not a mere formality. Unlike contempt, which is governed by the rules of each chamber, impeachment and removal constitutionally requires a majority vote by the House and a two-thirds vote by the Senate. Art. I, § 2, cl. 5; § 3, cl. 6. In addition, Congress has long thought it necessary to provide certain procedural safeguards to officials facing impeachment and removal. See, e.g. , 3 Annals of Cong. 903 (1793) (Rep. W. Smith). Finally, initiating impeachment proceedings signals to the public the gravity of seeking the removal of a constitutional officer at the head of a coordinate branch. 940 F.3d 710, 776 (CADC 2019) (Rao, J., dissenting).

* * *

Congress' legislative powers do not authorize it to engage in a nationwide inquisition with whatever resources it chooses to appropriate for itself. The majority's solution-a nonexhaustive four-factor test of uncertain origin-is better than nothing. But the power that Congress seeks to exercise here has even less basis in the Constitution than the majority supposes. I would reverse in full because the power to subpoena private, nonofficial documents is not a necessary implication of Congress' legislative powers. If Congress wishes to obtain these documents, it should proceed through the impeachment power. Accordingly, I respectfully dissent.

Justice ALITO, dissenting.

Justice THOMAS makes a valuable argument about the constitutionality of congressional subpoenas for a President's personal documents. In these cases, however, I would assume for the sake of argument that such subpoenas are not categorically barred. Nevertheless, legislative subpoenas for a President's personal documents are inherently suspicious. Such documents are seldom of any special value in considering potential legislation, and subpoenas for such documents can easily be used for improper non-legislative purposes. Accordingly, courts must be very sensitive to separation of powers issues when they are asked to approve the enforcement of such subpoenas.

In many cases, disputes about subpoenas for Presidential documents are fought without judicial involvement. If Congress attempts to obtain such documents by subpoenaing a President directly, those two heavyweight institutions can use their considerable weapons to settle the matter. See ante , at 2030 - 2031 (opinion of the Court) ("Congress and the President maintained this tradition of negotiation and compromise-without the involvement of this Court-until the present dispute"). But when Congress issues such a subpoena to a third party, Congress must surely appreciate that the Judiciary may be pulled into the dispute, and Congress should not expect that the courts will allow the subpoena to be enforced without seriously examining its legitimacy.

Whenever such a subpoena comes before a court, Congress should be required to make more than a perfunctory showing that it is seeking the documents for a legitimate legislative purpose and not for the purpose of exposing supposed Presidential wrongdoing. See ante , at 2031 - 2032. The House can inquire about possible Presidential wrongdoing pursuant to its impeachment power, see ante , at 2045 - 2047 (THOMAS, J., dissenting), but the Committees do not defend these subpoenas as ancillary to that power.

Instead, they claim that the subpoenas were issued to gather information that is relevant to legislative issues, but there is disturbing evidence of an improper law enforcement purpose. See 940 F.3d 710, 767-771 (CADC 2019) (Rao, J., dissenting). In addition, the sheer volume of documents sought calls out for explanation. See 943 F.3d 627, 676-681 (CA2 2019) (Livingston, J., concurring in part and dissenting in part).

The Court recognizes that the decisions below did not give adequate consideration to separation of powers concerns. Therefore, after setting out a non-exhaustive list of considerations for the lower courts to take into account, ante , at 2035 - 2036, the Court vacates the judgments of the Courts of Appeals and sends the cases back for reconsideration. I agree that the lower courts erred and that these cases must be remanded, but I do not think that the considerations outlined by the Court can be properly satisfied unless the House is required to show more than it has put forward to date.

Specifically, the House should provide a description of the type of legislation being considered, and while great specificity is not necessary, the description should be sufficient to permit a court to assess whether the particular records sought are of any special importance. The House should also spell out its constitutional authority to enact the type of legislation that it is contemplating, and it should justify the scope of the subpoenas in relation to the articulated legislative needs. In addition, it should explain why the subpoenaed information, as opposed to information available from other sources, is needed. Unless the House is required to make a showing along these lines, I would hold that enforcement of the subpoenas cannot be ordered. Because I find the terms of the Court's remand inadequate, I must respectfully dissent. 
      
      The Court of Appeals directed a "limited" remand for the District Court to consider whether it was necessary to disclose certain "sensitive personal details" (such as documents reflecting medical services received by employees of the Trump business entities) and a "few" documents that might not relate to the committees' legislative purposes. 943 F.3d 627, 667-668, 675 (2019). The Court of Appeals ordered that all other documents be "promptly transmitted" to the committees. Id. , at 669.
     
      
      By contrast, later that summer, the Judiciary was called on to resolve whether President Jefferson could be issued a subpoena duces tecum arising from Burr's criminal trial. See United States v. Burr , 25 F.Cas. 30 (No. 14,692d) (CC Va. 1807) ; see also Trump v. Vance, ante , --- U.S. ----, ---- - ----, 140 S.Ct. 2412, 2422 - 2423, --- L.Ed.2d ---- (2020).
     
      
      I express no opinion about the constitutionality of legislative subpoenas for other kinds of evidence.
     
      
      The Constitution also enumerates a limited set of congressional privileges. Although I express no opinion on the question, at least one early commentator thought the canon of expressio unius meant that Congress had no unenumerated privileges, such as the power to hold nonmembers in contempt. 1 St. George Tucker, Blackstone's Commentaries 200, n. § (1803).
     
      
      I note as well that Sumner expressly distinguished legislative subpoenas from subpoenas issued during "those inquiries which are in their nature preliminary to an impeachment." Cong. Globe, 36th Cong., 1st Sess., 3007 (1860).
     
      
      According to Justice Miller's private letters, "a majority of the Court, including Miller himself, were of the opinion that neither House nor Senate had power to punish for contempt witnesses who refused to testify before investigating committees." T. Taylor, Grand Inquest: The Story of Congressional Investigations 49 (1955). Only Justice Miller's desire to " 'decid[e] no more than is necessary' " caused the Court to avoid the broader question. Ibid.
     
      
      The Court also cited decisions between 1858 and 1913 from state courts and a Canadian court, none of which are persuasive evidence about the original meaning of the U. S. Constitution. McGrain , 273 U.S. at 165-167, 47 S.Ct. 319.
     
      
      The Court further observed that Congress has long exercised the power to hold nonmembers in contempt for reasons other than failure to comply with a legislative subpoena. McGrain , supra, at 168-169, 47 S.Ct. 319. The earliest case it cited, Anderson v. Dunn , 6 Wheat. 204, 5 L.Ed. 242 (1821), relied on arguments about Congress' power of self-protection, id., at 226-227. Members of Congress defending the use of contempt for these other purposes made similar arguments about self-protection. 5 Annals of Cong. 181-182 (1795) (Rep. W. Smith); id., at 189 (Rep. I. Smith). But the failure to respond to a subpoena does not pose a fundamental threat to Congress' ability to exercise its powers.
     
      
      I express no view on whether there are any limitations on the impeachment power that would prevent the House from subpoenaing the documents at issue.
     
      
      The syllabus constitutes no part of the opinion of the Court but has been prepared by the Reporter of Decisions for the convenience of the reader. See United States v. Detroit Timber & Lumber Co. , 200 U.S. 321, 337, 26 S.Ct. 282, 50 L.Ed. 499.
     