the validity of a claim of privilege based on the same feared prosecution, depending on whether the claim was asserted in state or federal court."); Kastigar v. U.S., 406 U.S. 441, 444-45, 92 S.Ct. 1653 (1972)(The Fifth Amendment privilege "can be asserted in any proceeding, civil or criminal, administra

the validity of a claim of privilege based on the same feared prosecution, depending on whether the claim was asserted in state or federal court."); Kastigar v. U.S., 406 U.S. 441, 444-45, 92 S.Ct. 1653 (1972)(The Fifth Amendment privilege "can be asserted in any proceeding, civil or criminal, administra

e A7-327) to the limitations and protections on use when their compulsory powers are used in MLAT requests, an approach which reflects such cases as Kastigar v. United States, 406 U.S. 441 (1972) as well as decisions in UK domestic law. We reiterate the protection at Article 7 (2) of the MLAT treaty altho

A7- 327) to the limitations and protections on use when their compulsory powers are used in MLAT requests, an approach which reflects such cases as Kastigar v. United States, 406 U.S. 441 (1972) as well as decisions in UK domestic law. We reiterate the protection at Article 7 (2) of the MLAT treaty altho

921 F.2d 442, 447 (2d Cir. 1990) ("The government bears the burden of proving that the taint [of an illegal search] has been alleviated.")). Like a Kastigar hearing, "the government bears `the heavy burden of proving that all of the evidence it proposes to use was derived from legitimate independent sou