A federal court has struck down the Trump administration’s attempt to deploy military forces in Los Angeles, ruling that the president overstepped his authority under long-standing US law. The decision, issued by US District Judge Charles Breyer in San Francisco, temporarily halts the deployment of thousands of troops while raising profound questions about the limits of presidential power.
The controversy began in June, when former President Donald Trump ordered 4,000 National Guard members and 700 active-duty US Marines into Los Angeles. The move followed widespread protests against immigration raids across the city, which is the second largest in the United States. Critics argued that the deployment represented an attempt to suppress dissent and enforce Trump’s aggressive immigration policies through military intimidation.
The lawsuit, filed by California Governor Gavin Newsom, contended that the deployment violated the Posse Comitatus Act, a federal law designed to prevent the military from being used in domestic policing. Evidence presented in court suggested that troops and military vehicles were deployed not only to protect federal facilities but also to perform law enforcement functions, including setting up roadblocks, managing perimeters, and even detaining individuals. Judge Breyer concluded that these actions amounted to a direct violation of the Act.
The Trump administration defended its decision, arguing that the Constitution permits presidents to use federal troops to protect government personnel and property. However, Breyer emphasized that the lack of clear boundaries on such deployments risked eroding civilian control over law enforcement. He warned that allowing the administration’s interpretation to stand could set a precedent for vastly expanding the military’s role in civilian affairs.
This ruling followed months of back-and-forth in the courts. In June, Breyer had already questioned the legality of transferring California’s National Guard to federal control, but that order was quickly overturned by the 9th Circuit Court of Appeals. The more recent three-day trial, however, provided fresh evidence of the military’s conduct after deployment, which Breyer found compelling.
Despite the court’s order, the Trump administration still had several hundred troops stationed in Los Angeles at the time of trial. Evidence showed they were being used in immigration operations, including providing security at marijuana farm raids and maintaining a show of force at public parks to deter potential demonstrations.
The broader implications of the ruling remain significant. While the decision is temporarily on hold until September 12 and is likely to be appealed, it underscores the judiciary’s increasing concern about the misuse of military power within US borders. Legal experts suggest that the case could ultimately reach the Supreme Court, where the balance between presidential authority and the constraints of the Posse Comitatus Act will be tested in full.
