State argues National Guard violated federal law by engaging in policing during immigration raids
California is challenging former U.S. President Donald Trump’s deployment of National Guard troops to Los Angeles during 2023 protests, arguing in court that the move was unlawful and aimed at silencing dissent against his immigration crackdown.
State’s Argument Against Military Use
During the second day of a landmark trial before U.S. District Judge Charles Breyer, California’s legal team asserted that the deployment violated the 19th-century Posse Comitatus Act, which prohibits the use of the military for domestic law enforcement. State attorney Meghan Strong alleged the government sought “a show of military force so great that any opposition… was silenced.”
Federal Government’s Defense
Justice Department lawyer Eric Hamilton countered that “substantial violence” in Los Angeles justified the deployment, claiming troops were limited to protecting federal agents and property—actions they argued fell within legal exceptions to the Posse Comitatus Act.
Scope of Trump’s Deployment
In June 2023, Trump ordered 700 Marines and 4,000 National Guard troops to Los Angeles after protests erupted in response to mass immigration raids. California Governor Gavin Newsom opposed the move and filed the lawsuit.
Disputed Actions on the Ground
California contends troops went beyond protective duties by setting up roadblocks, diverting traffic, and making arrests—activities considered prohibited policing. Government witnesses acknowledged these actions but cited exceptions when federal agents or property faced threats.
Judicial Scrutiny and Ongoing Impact
Judge Breyer questioned whether Trump alone could declare protests a “rebellion,” challenging the administration’s interpretation of presidential authority. While most troops have withdrawn, California Attorney General Rob Bonta says 300 National Guard members continue participating in immigration raids and restricting civilian movement.

The outcome of this case could shape future limits on presidential authority to deploy military forces domestically, testing the balance between national security claims and civil liberties during public unrest.
Sources: AsiaOne (2025) , Reuters (2025)
Keywords: California vs Trump, National Guard Legality, Posse Comitatus Act, Los Angeles Protests, Military in Civilian Law Enforcement, Immigration Crackdown











