Legality of Trump's deployment of National Guard in L.A. is argued in federal court

Just hours after President Donald Trump said he would deploy the National Guard to Washington, D.C., a federal judge in San Francisco heard arguments Monday about whether the administration violated federal law when it mobilized troops to Los Angeles this summer. California is asking U.S. District Court Judge Charles Breyer to order the Trump administration to return control of the remaining troops to Gov. Gavin Newsom and to stop using the military “to execute or assist in the execution of federal law.”