National Cable & Telecommunications Ass'n v. Brand X Internet Services, 545 U.S. 967, 982-983, 125 S.Ct. 2688 (June 27, 2005) ("A court's prior judicial construction of a statute trumps an agency construction otherwise entitled to Chevron deference only if the prior court decision holds that its construction follows from the unambiguous terms of the statute and thus leaves no room for agency discretion. . . . Only a judicial precedent holding that the statute unambiguously forecloses the agency's interpretation, and therefore contains no gap for the agency to fill, displaces a conflicting agency construction. " [emphasis added]).



Congress is not presumed to overrule existing law sub silentio. The categorical analysis and divisible statute rules were in place before the recent immigration legislation was enacted. There are strong arguments that the BIA's decision in Matter of Babaisakof, 24 I. & N. Dec. 306 (BIA 2007), does not qualify as the type of subsequent administrative interpretation under the Supreme Court's test in Brand X that can abrogate the Ninth Circuit fraud decisions. See Brand X, supra, 545 U.S. at 982: "A court's prior judicial construction of a statute trumps an agency construction otherwise entitled to Chevron deference only if the prior court decision holds that its construction follows from the unambiguous terms of the statute and thus leaves no room for agency discretion." In Chang v. INS, 307 F.3d 1185 (9th Cir. 2002), the Ninth Circuit's language suggests its decision was based on the "unambiguous terms" of INA 101(a)(43)(M)(i) and the statutory definition of conviction at INA 101(a)(48)(A): "To adopt the government's approach would divorce the $10,000 loss requirement from the conviction requirement, see 8 U.S.C. 1227(a)(2)(A)(iii) (providing that an alien is deportable 'who is convicted of an aggravated felony'." Chang v. INS is the type of circuit decision that the Court in Brand X said is not subject to abrogration by a later administrative interpretation. The argument may not be as strong for Matter of NAM, 24 I. & N. Dec. 336 (BIA 2007) (offense need not be an aggravated felony to be a particularly serious crime for withholding purposes), or in other circuits, but in the Ninth Circuit, because Chang was linked to statutory construction and not just the Taylor/Shepard analysis, the BIA's later interpretation cannot overrule the Ninth Circuit's decision in Chang v. INS. Li v. Ashcroft, 389 F.3d 892 (9th Cir. 2004), or the other 9th Circuit fraud cases, may offer additional support.
Thanks to Dan Kesselbrenner.