The Pentagon is scrambling to establish rules to guide U.S. Marines who could be faced with the rare and difficult prospect of using force against citizens on American soil, now that the Trump administration is deploying active duty troops to the immigration raid protests in Los Angeles.

In an exclusive interview with Meet the Press, Sen. Adam Schiff (D-Calif.) condemns President Trump’s call to send the National Guard and Marines into Los Angeles amid protests and criticizes the forceful removal of fellow California Sen.

Los Angeles endured a sixth day of protests that have been largely peaceful, mostly contained to a few blocks of the city's downtown area.

Marines are heading to Los Angeles to guard federal assets during immigration protests while Gov. Newsom sues the Trump administration over a National Guard deployment.

Roughly 700 Marines from the Twentynine Palms base have been mobilized in response to protests and unrest in Los Angeles.

"No one signs up to join the United States Marine Corps to attack protesters," U.S. Rep. Seth Moulton, D-6th District, a former Marine, told MSNBC on Sunday.

The spokesperson told CNN the Marines "have not completed [Standing Rules for the Use of Force] and nonlethal weapons training."

Defense Secretary Pete Hegseth warned that Marines from nearby Camp Pendleton were ready to deploy if necessary.

“Constitutionally, as a nation, we do not want to use active duty troops, deploy them against American citizens and others residing in our country. Because the impact is so negative. It makes it appear that the United States of America is a battleground,” Barthel said.

U.S. Marines deployed to Los Angeles to help temper unrest in the city, stopped and detained an American citizen trying to enter a federal building.