1799年制定的《洛根法》是联邦法律,刑事打击私人公民代表美国实施外交政策。请看The Logan Act (1 Stat. 613, 18 U.S.C. § 953, enacted January 30, 1799) :Any citizen of the United States, wherever he may be, who, without authority of the United States, directly or indirectly commences or carries on any correspondence or intercourse with any foreign government or any officer or agent thereof, with intent to influence the measures or conduct of any foreign government or of any officer or agent thereof, in relation to any disputes or controversies with the United States, or to defeat the measures of the United States, shall be fined under this title or imprisoned not more than three years, or both.