Prabhudial v. Holder, ___ F.3d ___, 2015 WL 1061798 (2d Cir. Mar. 12, 2015) (petition for review denied, where petitioner failed to argue before the IJ that his conviction did not qualify as an aggravated felony controlled substances offense applying the categorical approach before the IJ, and the BIA may apply the doctrine of waiver to matters not raised before an IJ).
NOTE: It appears that the noncitizen completely failed to argue whether his conviction would trigger removal under the categorical analysis before the IJ, and instead sought time for a pending state case to be decided. The categorical argument was only raised on appeal to the BIA.