A federal judge sided with local Washington, D.C., officials by ruling that the Trump administration‘s deployment of the National Guard to the district is unlawful, marking the latest legal setback for the president’s use of troops domestically.

U.S. District Judge Jia Cobb, an appointee of former President Joe Biden, blocked the deployment of the National Guard to Washington for purposes of combating crime, but paused the effect of her ruling until Dec. 11 to allow for an appeal. Cobb found that President Donald Trump exceeded his authority to deploy the D.C. National Guard under federal law.