Military-style vehicles and National Guards troops have blocked a portion of 4th Street in front of the Ronald Reagan Federal Building and Courthouse.

The restraining order request is focused on a growing expectation among California officials that troops will soon be sent on arrest missions.

Monday's protests were largely calmer than Sunday's clashes. California officials insist that the 4,000 National Guards troops and 700 active duty Marines en route to L.A. are an unnecessary abuse of power by Trump.

President Donald Trump has built his presidency around stretching the bounds of presidential authority, and his response to protests over an immigration crackdown in Los Angeles is no exception.

DHS Assistant Secretary Tricia McLaughlin called the decision "deeply disturbing," accusing state officials of siding with criminals over public safety.

Gov. Gavin Newsom announced a lawsuit against the Trump administration for federalizing the National Guard in L.A. County over the weekend, saying the president abused his authority.

State AG Rob Bonta called the federal government's order "unlawful" and "unprecedented" as anti-ICE raid demonstrations emerged in Los Angeles.

Armed National Guard troops are accompanying immigration agents as they carry out mass deportation raids on the streets of Los Angeles, multiple sources told The Post.

HOW WE GOT HERE: The protests erupted after Immigration Customs Enforcement (ICE) officers on Friday carried out raids in three locations across L.A., where dozens of people were taken into custody. Newsom called the raids “chaotic federal sweeps” that aimed to fill an “arbitrary arrest quota.”