Los Angeles residents and experts say that the National Guard's presence in Los Angeles in response to immigration protests is reminiscent of a longstanding dynamic in the state and around the country.

Experts say it's highly unusual for a president to call up the National Guard when the governor of a state objects. And Newsom is strongly in opposition.

In announcing the lawsuit, Attorney General Rob Bonta called the president's move to federalize the National Guard an "infringement" on state sovereignty.