Ashe v. Swenson, 397 U.S. 436 (1970), was a decision by the United States Supreme Court, which held that "when an issue of ultimate fact has once been determined by a valid and final judgment, that issue cannot again be litigated between the same parties in any future lawsuit." The Double Jeopardy Clause prevents a state from relitigating a question already decided in favor of a defendant at a previous trial. Here, the guarantee against double jeopardy enforceable through the Fourteenth Amendment provided that the government could not prosecute the criminal defendant in a second trial as it related to a different victim but the same robbery the criminal defendant was acquitted of in the first trial.

See also

• List of United States Supreme Court cases, volume 397
• Waller v. Florida
  Waller v. Florida
  Waller v. Florida, 397 U.S. 387 , was a decision by the United States Supreme Court, which held that the Double Jeopardy Clause protects defendants from successive prosecutions by states and municipalities for offenses based on the same criminal conduct.-See also:*List of United States Supreme...
  
  (1970)