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An act of Congress ought never to be construed to violate the law of nations if any other possible construction remains, and consequently can never be construed to violate neutral rights or to affect neutral commerce further than is warranted by the law of nations as understood in this country."
U.S. Supreme Court
Murray v. The Charming Betsey, 6 U.S. 2 Cranch 64 64 (1804)