US President Donald Trump has authorised the deployment of an additional 2,000 National Guard members to respond to immigration protests in Los Angeles.
The latest order brings the total number of guards put on federal orders for the protests to more than 4,100.
The news comes hours after the Pentagon deployed about 700 Marines to the protests in the city.
The troops will be used to protect federal property and personnel, including immigration agents, and are prohibited from performing law enforcement duties under the Posse Comitatus Act.
A US official said, the Pentagon is drafting guidelines that will explain to the Marines what they can and cannot do.
The California state has sued the president over his deployment of the guard troops, as growing numbers of demonstrators took to the city's streets for a fourth day.
California Attorney General Rob Bonta announced the lawsuit by telling reporters that Trump had "trampled the state's sovereignty".