President Donald Trump said on Monday he would support the arrest of California's Gavin Newsom, in a dramatic escalation of a growing conflict with the Democratic governor about immigration protests that roiled Los Angeles during the weekend.

The lawsuit will seek to set aside the president’s order calling up troops in response to protests that spread over the weekend.

California officials on Monday said they would file a federal lawsuit over the mobilization of the National Guard during the weekend's massive immigration protests.