Humberto Álvarez-Machain, a Mexican physician, was abducted from his Guadalajara office in 1990 by Mexican nationals paid by the U.S. Drug Enforcement Administration. He was flown to Texas to stand trial for the alleged torture and murder of DEA agent Enrique Camarena. Mexico protested vigorously, demanding his return. In *United States v. Álvarez-Machain*, decided on June 15, 1992, the Supreme Court ruled 6-3 that the forcible abduction did not violate the U.S.-Mexico Extradition Treaty. The Court's majority, led by Chief Justice William Rehnquist, reasoned that the treaty did not explicitly prohibit such actions. The silence of the text was permission.
The decision was a stark assertion of American judicial power beyond its borders. It mattered because it provided a legal green light for what became known as "extraordinary rendition." If a treaty partner was unwilling or slow to extradite, the U.S. government could, in the Court's view, simply arrange a private kidnapping. The ruling treated national sovereignty as a matter of contractual loopholes, not principle.
A persistent misunderstanding is that the Court approved of the kidnapping. It did not. It merely held that the method of securing a defendant's presence did not prohibit his prosecution. The majority opinion was coldly procedural. The furious dissent by Justice John Paul Stevens argued the majority had rendered the treaty "a dead letter," reducing international agreements to absurdities.
The immediate impact was diplomatic fury. Mexico and several other nations filed formal complaints. The legal impact was more enduring: it established a precedent for circumventing extradition law through creative, state-sponsored abduction. Álvarez-Machain himself was ultimately acquitted at trial due to lack of evidence. The U.S. government's pyrrhic legal victory cost millions in diplomatic capital and cemented a reputation for unilateral enforcement that long outlasted the specific case.