United States v. Alfredo Saucedo Perez , 897 F.2d 751 ( 1990 )
United States v. Sheldon Schoenborn , 4 F.3d 1424 ( 1993 )
United States v. Jaime Estrada-Fernandez Jose Valenzuela-Hernandez , 150 F.3d 491 ( 1998 )