United States v. Delgado-Garcia, ___ F.3d ___ (D.C. Cir. July 23, 2004) (defendants alien smuggling convictions affirmed on appeal; initial, unconditional pleading of guilty to charged crimes acted as waiver of defendants' subsequent due process and maritime law claims).
http://caselaw.lp.findlaw.com/data2/circs/dc/033060a.pdf