
    HANG YONG DONG, Petitioner, v. Eric H. HOLDER, Jr., United States Attorney General, Respondent.
    No. 09-0604-ag.
    United States Court of Appeals, Second Circuit.
    Feb. 2, 2010.
    Theodore N. Cox, New York, NY, for Petitioner.
    
      Tony West, Assistant Attorney General; Michelle Gorden Latour, Assistant Director; Jessica E. Sherman, Trial Attorney, Office of Immigration Litigation, United States Department of Justice, Washington, D.C., for Respondent.
    PRESENT: ROBERT D. SACK, PETER W. HALL and DEBRA ANN LIVINGSTON, Circuit Judges.
   SUMMARY ORDER

Hang Yong Dong, a native and citizen of China, seeks review of a February 4, 2009 order of the BIA, affirming the April 28, 2008 decision of Immigration Judge (“IJ”) Thomas J. Mulligan, which denied his applications for cancellation of removal, asylum, withholding of removal, and relief under the Convention Against Torture (“CAT”). In re Hang Yong Dong, No. [ AXXX XXX XXX ] (B.I.A. Feb. 4, 2009), aff'g No. [ AXXX XXX XXX ] (Immig. Ct. N.Y. City Apr. 28, 2008). We assume the parties’ familiarity with the underlying facts and procedural history of this case.

Under the circumstances of this case, we consider both the IJ’s and the BIA’s opinions “for the sake of completeness.” Zaman v. Mukasey, 514 F.3d 233, 237 (2d Cir.2008). The applicable standards of review are well-established. See Corovic v. Mukasey, 519 F.3d 90, 95 (2d Cir.2008); Salimatou Bah v. Mukasey, 529 F.3d 99, 110 (2d Cir.2008).

I.Application for Cancellation of Removal

We lack jurisdiction to review the agency’s denial of Dong’s application for cancellation of removal based on his failure to establish “exceptional and extremely unusual hardship.” 8 U.S.C. § 1252(a)(2)(B); see also Barco-Sandoval v. Gonzales, 516 F.3d 35, 39 (2d Cir.2008). While we retain jurisdiction to review constitutional claims and questions of law, 8 U.S.C. § 1252(a)(2)(D), “we lack jurisdiction to review any legal argument that is so insubstantial and frivolous as to be inadequate to invoke federal-question jurisdiction,” Barco-Sandoval, 516 F.3d at 40. We also lack jurisdiction to review purported constitutional claims or questions of law when the argument “merely quarrels over the correctness of the factual findings or justification for ... discretionary choices.” Xiao Ji Chen v. U.S. Dep’t of Justice, 471 F.3d 315, 329 (2d Cir.2006). In this case, although Dong purports to raise errors of law in the agency’s decisions, in substance his arguments are not colorable or simply amount to challenges of the agency’s factual findings over which we lack jurisdiction. See Barco-Sandoval, 516 F.3d at 40; see also Xiao Ji Chen, 471 F.3d at 329. Accordingly, we dismiss Dong’s petition for review for lack of jurisdiction to the extent that he challenges the agency’s denial of his application for cancellation of removal.

II. Applications for Asylum and Withholding of Removal

Substantial evidence supports the agency’s finding that Dong failed to establish his eligibility for asylum and withholding of removal based on the birth of his U.S. citizen children. See Jian Hui Shao v. Mukasey, 546 F.3d 138, 158-73 (2d Cir. 2008). We have previously reviewed the agency’s consideration of similar evidence to that which Dong submitted in this case and have found no error in its conclusion that such evidence was insufficient to establish an objectively reasonable fear of persecution. See id. Accordingly, the agency reasonably denied his applications for asylum and withholding of removal. See Paul v. Gonzales, 444 F.3d 148, 156 (2d Cir.2006).

III. Application for CAT Relief

As the government contends, Dong abandons any challenge to the agency’s denial of his application for CAT relief by failing to raise any such challenge in his brief to this Court. See Anderson v. Branen, 27 F.3d 29, 30 (2d Cir.1994).

For the foregoing reasons, the petition for review is DENIED. Having completed our review, we DISMISS the petitioner’s pending motion for a stay of removal as moot.  