United States v. Humberto Alvarez-Machain

504 U.S. 655 · Decided June 15, 1992 · Supreme Court of the United States

At a glance

United States v. Humberto Alvarez-Machain was decided on June 15, 1992 by a vote of 6–3. The Court reversed the lower court's decision and remanded the case. Chief Justice William H. Rehnquist wrote the opinion of the Court. SCDB classifies its main issue as “Subconstitutional fair procedure, miscellaneous” in the Criminal Procedure area.

Read the opinion

• CourtListener (Free Law Project) — opinion text
• Library of Congress — official U.S. Reports scan

Case details

How the Justices voted

Full case caption

United States v. Humberto Alvarez-Machain

SCDB identifiers: case 1991-089, docket 1991-089-01.

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Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error