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Supreme Court Rejects Missouri Bid to Revive Law Targeting Federal Gun Rules

The decision leaves in place lower-court rulings blocking Missouri's Second Amendment Preservation Act on Supremacy Clause grounds.

FILE - The Supreme Court is seen in the distance, framed through columns of the U.S. Senate at the Capitol in Washington, Feb. 20, 2025. (AP Photo/J. Scott Applewhite, File)
A U.S. Supreme Court Police officer leans against the statue titled the Contemplation of Justice along the front steps of the U.S. Supreme Court building in Washington, D.C., U.S., April 8, 2025. REUTERS/Jonathan Ernst/File Photo
FILE - The Supreme Court in Washington, June 30, 2024. (AP Photo/Susan Walsh, File)

Overview

  • The justices declined to hear Missouri's appeal on Monday, leaving the challenged state statute unenforceable.
  • U.S. District Judge Brian Wimes enjoined the law in 2023, and the 8th U.S. Circuit Court of Appeals affirmed in 2024.
  • Passed in 2021, the law declares certain federal firearms restrictions unconstitutional and allows fines up to $50,000 against state or local officials who help enforce them.
  • The statute does not specify which federal rules it targets and fails to define key terms such as “law-abiding,” which the Biden administration said caused agencies to withdraw cooperation with federal enforcement.
  • The Justice Department under President Trump advised the Court to deny review and signaled Missouri may ask the district court to narrow the existing injunction.