The last time the National Guard was activated without a governor’s permission was in 1965, when President Lyndon B. Johnson sent troops to protect a civil rights march in Alabama.

California sued the Trump administration on Monday over its decision to send in National Guard troops in response to protests over immigration enforcement, calling it an unconstitutional use of executive power that usurped the state’s authority.

President Donald Trump has deployed California National Guard troops to Los Angeles to respond to immigration protests, over the objections of California Gov. Gavin Newsom.