Before revision: In the case of United States v. Alvarez-Machain, 504 U.S. 655 (1992), the Supreme Court of the United States held that, notwithstanding the existence of an extradition treaty with Mexico, it was still legal for the federal government of the United States to exercise self-help by forcibly aducting ("forcible abduction") him on a street in Mexico for his alleged crime and to bring him back to the United States in order to stand trial.
After revision: On appeal, in United States v. Alvarez-Machain, 504 U.S. 655 (1992), the Supreme Court of the United States held that, notwithstanding the existence of an extradition treaty with Mexico, it was still legal for the federal government of the United States to exercise self-help by forcibly abducting him on a street in Mexico for his alleged crime and bringing him to the United States in order to stand trial.