United States v. Rodriguez, __ F.3d __ (8th Cir. Aug. 25, 2005) (Defendant may not collaterally attack a prior deportation order since he knowingly waived his right to appeal the immigration judge's decision and was not deprived of a right to judicial review).
http://caselaw.lp.findlaw.com/data2/circs/8th/044178p.pdf