United States v. Pintado-Isiordia, ___ F.3d ___ (9th Cir. May 26, 2006) (per curiam) (because record unclear whether district court relied on categorical approach, or modified categorical approach, defendants sentence for illegal reentry was vacated and remanded for district court determination as to whether prior conviction for assault with a firearm qualifies as a "crime of violence" under either approach).
http://caselaw.lp.findlaw.com/data2/circs/9th/0550489p.pdf