Rivera-Sanchez v. Reno, 198 F.3d
545 (5th Cir. Dec. 30, 1999) (federal conviction of violating
INA § 275(a), 8 U.S.C. 1325(a) illegal entry did not
occur after the defendant had previously been deported, and
so did not constitute an aggravated felony as defined in INA
§ 101(a)(43)(O), 8 U.S.C. 1101(a)(43)(O) for immigration
purposes).