A judge temporarily halted the Trump administration’s National Guard deployment in Los Angeles, writing that the federal government did not have the authority to nationalize California’s National Guard. U.S. District Judge Charles Breyer issued the temporary restraining order today after an hourlong hearing in a San Francisco federal court.

A U.S. appeals court on Thursday allowed President Donald Trump to maintain his deployment of National Guard troops in Los Angeles amid protests over stepped-up immigration enforcement, temporarily pausing a lower court ruling that blocked the mobilization.