The following excerpt is from Stonehill v. United States, 405 F.2d 738 (9th Cir. 1969):
Neither the Fourth Amendment of the United States Constitution nor the exclusionary rule of evidence, designed to deter Federal officers from violating the Fourth Amendment, is applicable to the acts of foreign officials. Brulay v. United States, 383 F.2d 345 (9th Cir. 1967). The reasoning for this is:
1) all relevant evidence is admissible unless there is an exclusionary rule;
2) even the Fourth Amendment does not by itself provide for exclusion of evidence unlawfully obtained;
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