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.

National Guard members and Marines deployed to Los Angeles cannot perform law enforcement duties by law. That would change if Trump invokes the Insurrection Act.

4:47 p.m. EDT The Trump administration asked the judge to reject Newsom’s request and allow it to respond by Wednesday, calling Newsom’s attempt to block the deployment of federal troops “legally meritless” and saying it would jeopardize the safety of Homeland Security personnel and interfere with the government’s ability to carry out operations.

Jacob Soboroff, NBC News Correspondent joins Nicolle Wallace on Deadline White House live from the Metropolitan Detention center where the National Guard is stationed with an up close look at what today’s protests look like and how Donald Trump’s mobilization of the California National Guard as put troops face to face with protestors who happen to be their own neighbors.

Pentagon officials said the cost of deploying thousands of National Guard troops and Marines to Los Angeles is $134 million.

President Donald Trump is defending his decision to send another 2,000 National Guard troops along with 700 Marines to Los Angeles.

The California Governor has sued the U.S. President over the mobilization of the National Guard, calling it “an unmistakable step toward authoritarianism.”

Senators from both sides of the aisle took to responding over President Donald Trump's calling of the National Guard in Los Angeles.

National Guard troops arrived in downtown Los Angeles on Sunday after being ordered into the city by President Trump in response to a weekend of violent clashes between law enforcement officers and protesters triggered by immigration enforcement operations in the area on Friday.