"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.

By Brad Brooks, Jorge Garcia, Idrees Ali and Phil StewartLOS ANGELES (Reuters) -U.S. Marines were deployed to Los Angeles on Friday, the military said, a rare domestic use of its forces as protests over President Donald Trump's immigration raids spread nationwide.

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.

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.

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.

As the Pentagon crafts rules of engagement for Marines deployed to an American city, it's clear that the president is playing with fire.

“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.