
    TSERING TITHAR NAMOCHA, Petitioner, v. IMMIGRATION AND CUSTOMS ENFORCEMENT, United States Department of Homeland Security, Respondent.
    No. 08-6151-ag.
    United States Court of Appeals, Second Circuit.
    Dec. 10, 2009.
    
      H. Raymond Fasano, Madeo & Fasano, New York, NY, for Petitioner.
    Tony West, Assistant Attorney General, Civil Division; Anthony C. Paine, Senior Litigation Counsel, Office of Immigration Litigation; Lance L. Jolley, Trial Attorney, Office of Immigration Litigation, Civil Division, United States Department of Justice, Washington, D.C., for Respondent.
    PRESENT: DENNIS JACOBS, Chief Judge, ROGER J. MINER, DEBRA ANN LIVINGSTON, Circuit Judges.
   SUMMARY ORDER

Petitioner Tsering Tithar Namocha, an alleged native of Tibet and citizen of the People’s Republic of China, seeks review of a November 20, 2008 order of the BIA affirming the October 18, 2006 decision of Immigration Judge (“IJ”) George T. Chew denying her application for asylum, withholding of removal, and relief under the Convention Against Torture (“CAT”). In re Tsering Tithar Namocha, No. [ AXXXXXX-XXX ] (B.I.A. Nov. 20, 2008), aff'g No. [ AXXX-XXX-XXX ] (Immig. Ct. N.Y. City Oct. 18, 2006). We assume the parties’ familiarity with the underlying facts and procedural history of this case.

When the BIA adopts the decision of the IJ and supplements the IJ’s decision, this Court reviews the decision of the IJ as supplemented by the BIA. See Yan Chen v. Gonzales, 417 F.3d 268, 271 (2d Cir.2005). This Court reviews the agency’s factual findings, including adverse credibility findings, under the substantial evidence standard. 8 U.S.C. § 1252(b)(4)(B); see also Corovic v. Mukasey, 519 F.Sd 90, 95 (2d Cir.2008). We review de novo questions of law and the application of law to undisputed fact. Bah v. Mukasey, 529 F.3d 99, 110 (2d Cir.2008).

In addition to the general statutory requirement that petitioners exhaust available administrative remedies, 8 U.S.C. § 1252(d)(1), petitioners must also raise to the BIA the specific issues they later raise in this Court. See Foster v. INS, 376 F.3d 75, 78 (2d Cir.2004). While not jurisdictional, this judicially imposed exhaustion requirement is mandatory. Lin Zhong v. U.S. Dep’t of Justice, 480 F.3d 104, 119-20 (2d Cir.2007). However, we have never held that a petitioner is limited to the “exact contours” of his or her argument to the agency. Gill v. INS, 420 F.3d 82, 86 (2d Cir.2005). On the contrary, Title 8, section 1252(d)(1) does not prevent the Court from considering “specific, subsidiary legal arguments, or arguments by extension,” even if those arguments were not presented below. Id.; see also Restrepo v. McElroy, 369 F.3d 627, 633 n. 10 (2d Cir.2004); Drax v. Reno, 338 F.3d 98, 112 n. 19 (2d Cir.2003).

Namocha argued before the BIA that the IJ’s adverse credibility finding was flawed because the documents in question were found only to be altered, not fraudulent, and because the IJ failed to specify why the alterations to the documents were material to Namocha’s credibility. We find Namocha’s argument that the IJ failed to make a finding that she knew the documents were altered prior to their submission, despite her testimony to the contrary, is a “subsidiary argument” to the one she raised before the BIA. See Lin Zhong, 480 F.3d at 119-120; Steevenez v. Gonzales, 476 F.3d 114, 117-18 (2d Cir.2007).

The IJ’s adverse credibility determination was not based on substantial evidence. See Corovic, 519 F.3d at 97-98. In Corovic, we held that the submission of fraudulent documents is “insufficient to hold that [an alien] lacks credibility where there is no indication or finding that he knew or had reason to know that the documents [were] fraudulent.” Id. at 97 (second alteration in original). We concluded that “when an applicant contests that he knowingly submitted a fraudulent document, the IJ must make an explicit finding that the applicant knew the document to be fraudulent before the IJ can use the fraudulent document as the basis for an adverse credibility determination.” Id. at 97-98 (emphasis added). Because Namocha testified that she did not know the documents were altered before she submitted them, and because the IJ failed to make any finding regarding her knowledge of the authenticity of the documents, we remand to the BIA so that the agency may make the necessary finding. See id.; see also Mufied v. Mukasey, 508 F.3d 88, 91-92 (2d Cir.2007) (discussing the “ordinary remand rule”). We reject the Government’s argument that remand would be futile because Namocha was ordered removed to Nepal and India in the alternative. Because the agency never considered this argument, and our review is limited to the reasoning of the agency, remand is appropriate. See INS v. Ventura, 537 U.S. 12, 16-17, 123 S.Ct. 353, 154 L.Ed.2d 272 (2002) (per curiam); Manzur v. U.S. Dep’t of Homeland Sec., 494 F.3d 281, 289 (2d Cir.2007).

For the foregoing reasons, the petition for review is GRANTED, and the case REMANDED for further proceedings consistent with this order. As we have completed our review, any pending motion for a stay of removal in this petition is DISMISSED as moot. Any pending request for oral argument in this petition is DENIED in accordance with Federal Rule of Appellate Procedure 34(a)(2) and Second Circuit Local Rule 34(b). 
      
      . In addition, Namocha testified at her merits hearing that she did not know the identity documents were altered when she submitted them. When asked during cross-examination by the government whether she knew about the alterations to the documents, Namocha testified, “Before this time I did not know there was any change or alteration” and that, "I can't see anything any changes or anything right now even.”
     