The lawsuit argues that President Donald Trump overstepped his authority when he called up by the National Guard in defiance of [Newsom], invoking a law that allows the president to do so under threat from a foreign “invasion” or “rebellion” against the U.S. government.

After Trump on Sunday called up 2,000 National Guard troops to respond, Newsom said he would sue the administration, a promise on which the state followed through a day later.

“If you want to know why illegal aliens flocked to your state, stop accusing Donald Trump. Look in the mirror,” Vance said.