Mendoza v. Holder, 606 F.3d 1137 (9th Cir. Jun. 2, 2010) (conviction still exists after vacatur granted for rehabilitative purposes only; any vacatur granted under Ariz.Rev.Stat. 13-907 is rehabilitative, and therefore still a conviction for immigration purposes), following Murillo-Espinoza v. INS, 261 F.3d 771, 773-74 (9th Cir. 2001).