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Supreme Court Limits Nationwide Injunctions in Trump v. CASA

Justice Barrett’s ruling returns Trump’s birthright citizenship challenge to district courts to refine the scope of relief

Chief Justice of the US Supreme Court John Roberts speaks during a lecture to the Georgetown Law School graduating class of 2025, in Washington, May 12, 2025.
The Supreme Court is seen from the US Capitol in Washington, DC, on June 25.
Justice Ketanji Brown Jackson, second from right, listens as President Donald Trump speaks during his inauguration ceremonies at the Capitol in Washington, DC, on January 20.

Overview

  • The Supreme Court’s 6–3 decision holds that lower federal courts lack equitable authority to issue universal injunctions blocking policies nationwide against nonparties
  • Justice Amy Coney Barrett’s majority opinion avoids the substance of birthright citizenship and instructs trial judges to tailor future injunctions to the parties before them
  • President Trump hailed the ruling as a “monumental victory for the Constitution” and said his administration will seek to revisit and lift existing nationwide blocks on its policies
  • Chief Justice John Roberts cautioned political figures against attacking judges over unfavorable decisions and warned that mere “venting” undermines judicial independence
  • Civil liberties advocates warn the curbs on universal injunctions weaken courts’ power to check government misconduct, and Justice Samuel Alito urged strict adherence to Rule 23 to prevent class actions from becoming de facto nationwide relief