See United States v. Davis, 767 F.2d 1025, 1029-30 (2d Cir.1985) (treaty between the United States and Switzerland used to obtain Swiss bank records expressly provided that it extended no rights to the accused); United States v. Cordero, 668 F.2d 32, 37-38 (1st Cir.1981) (asylum country chose to extradite in a manner other than as provided in the treaty).