Altamirano v. Gonzales, ___ F.3d ___, 2005 WL 2839982 (9th Cir. Oct. 31, 2005) (a parolee has not been "admitted" to the United States, and therefore is subject to the grounds of inadmissibility, and bears the burden of showing admissibility).
http://caselaw.lp.findlaw.com/data2/circs/9th/0370737p.pdf