Lavira v. Attorney General of U.S., 478 F.3d 158 (3d Cir. Feb. 26, 2007) (reversing where IJ failed to examine underlying facts of the case in determining whether conviction for attempted sale of a controlled substance was a "particularly serious crime" for asylum/withholding purposes), following Vente v. Gonzales, 415 F.3d 296, 302-03 (3d Cir.2005) ("[I]f the BIA fails to address one of an applicant's stated grounds for relief, the case must be remanded for the BIA to consider the claim.").