Newsom v. Trump

Newsom v. Trump was a lawsuit brought by California seeking relief against the second Trump administration for the administration's federalization and deployment of the California National Guard in response to the June 2025 Los Angeles protests.

The lawsuit was brought in the United States District Court for the Northern District of California on June 9, 2025, at first requesting immediate relief, which was denied by district judge Charles Breyer the next day. On June 12, Breyer ruled against the Trump administration, which promptly appealed to the United States Court of Appeals for the Ninth Circuit, being granted a stay of that ruling. On June 17, an appellate panel of the Ninth Circuit held a hearing for the case. On June 19, the appellate panel of the Ninth Circuit extended the stay granted on June 12.

On September 2, 2025, Breyer ruled that the use of the National Guard violated the Posse Comitatus Act and issued an injunction, staying the injunction until September 12 to allow the government time to appeal. The government appealed on September 3, and the Ninth Circuit granted a stay on September 4. On October 22, 2025, the Ninth Circuit denied rehearing en banc of the decision that President Trump lawfully exercised authority under 10 U.S.C. § 12406, which allowed President Trump to sustain the federalization. On December 10, 2025, Breyer ordered the National Guard deployment in Los Angeles to end, which the Ninth Circuit upheld on December 12 with an order for the federalized National Guard troops to leave the city by noon on December 15 while allowing the federalization to continue.

On December 31, 2025, Trump would end the deployment of National Guard forces in Los Angeles.