The hearing, set before U.S. District Judge Charles Breyer in San Francisco, will set off a rare test over the legality of a military deployment on American soil.

The deployment of troops to Los Angeles raises questions about what Trump can and can't do with the military on U.S. soil, and whether he's crossing the line.

President Donald Trump responded by deploying thousands of National Guard troops and Marines. Alameda County hotline for reporting ICE activity: 510-241-4011 The president’s unilateral moves were met with pushback by Gov.

In response to the protests in his state, Texas Gov. Greg Abbott, a Republican, has announced that he intends to deploy the National Guard across the state to “ensure peace and order” ahead of further planned demonstrations against the Trump Administration’s immigration policies.

After President Trump deploys the National Guard without consulting California Gov. Gavin Newsom, questions over those actions are flying.

The National Guard has at times detained protesters in its deployment to Los Angeles, an official said Wednesday, as demonstrations against Immigration and Customs enforcement raids spread to other major cities.

California Gov. Gavin Newsom has called President Trump's military intervention in Los Angeles an assault on democracy

Anti-ICE protests grew around the country as President Trump defended his deployment of the marines and national guard to quell protestor violence. Meanwhile, California’s Democratic governor filed a lawsuit to stop the military from enforcing immigration law.