Ferreira v. Ashcroft, 382 F.3d 1045 (9th Cir. Sept. 9, 2004) (under federal law, a second possession conviction is not made a "felony" for this purpose by virtue of a recidivist sentence enhancement; court noted that contrary case, United States v. Garcia-Olmedo, had been overruled by en banc decision United States v. Corona-Sanchez).