About: United States v. Alvarez-Machain

United States v. Alvarez-Machain, 504 U.S. 655 (1992), was a United States Supreme Court case in which the Court held that the respondent's forcible abduction from a foreign country, despite the existence of an extradition treaty with said country, does not prohibit him from being tried before a U.S. court for violations of American criminal laws. The ruling reconfirmed the Ker-Frisbie Doctrine, established in Ker v. Illinois (1886) and Frisbie v. Collins (1952), which generally permits the prosecution of criminal defendants regardless of whether their presence was obtained in accordance with an applicable extradition treaty.