Thirty mayors from the LA area joined together at a news conference to call on the raids to end.

LA Mayor Karen Bass again claimed that LA is "part of a national experiment" by the Trump administration "to determine how far the federal government can go in reaching in and taking over power" from state and local leaders.

Bass also highlighted the estimated $134 million spent to deploy the Marines and National Guard, saying, "all of our cities could use that money."

For many residents of the south LA city of Paramount -- one of the sites of protests -- "this has been one of the most devastating moments in recent memory," Paramount Mayor Peggy Lemons said, with some families now too afraid to leave their homes.

Huntington Park Mayor Arturo Flores, a Marine Corps veteran who served in Iraq and Afghanistan, said, "The militarization of immigration enforcement has no place in our neighborhoods and the deployment of Marines on U.S. soil is an alarming escalation that undermines the values of democracy."

"We stand against these fear-based tactics that target immigrant communities and erode public trust," he said, calling the administration's actions "political theater that is rooted in fear."

California Gov. Gavin Newsom's lawsuit challenging the Trump administration from using the military to enforce federal immigration laws is a "crass political stunt endangering American lives,” Department of Justice lawyers said.

The lawyers asked a federal judge to deny Newsom’s request for a temporary restraining order that would limit the military to protecting federal buildings, arguing such an order would amount to a "rioters’ veto to enforcement of federal law."

"The extraordinary relief Plaintiffs request would judicially countermand the Commander in Chief’s military directives -- and would do so in the posture of a temporary restraining order, no less. That would be unprecedented. It would be constitutionally anathema. And it would be dangerous," they argued.

In Newsom's request for an emergency order blocking the troops from assisting in federal law enforcement, he argued Trump failed to meet the legal requirements for a federal deployment of the National Guard. Title 10 of the U.S. Code on Armed Services allows a federal deployment in response to a "rebellion or danger of a rebellion against the authority of the Government of the United States."

"To put it bluntly, there is no invasion or rebellion in Los Angeles; there is civil unrest that is no different from episodes that regularly occur in communities throughout the country, and that is capable of being contained by state and local authorities working together," Newsom argued.

In response, lawyers with the Department of Justice argued that California should not "second-guess the President’s judgment that federal reinforcements were necessary" and that a federal court should defer to the president’s discretion on military matters.

-ABC News’ Peter Charalambous

Mexican President Claudia Sheinbaum said 61 Mexican nationals have been detained in the LA raids and are now in detention centers.

-ABC News’ Will Gretsky

In downtown Los Angeles Tuesday night, 203 people were arrested for failing to disperse and 17 were arrested for curfew violation, the LAPD said.

Another three people were arrested for possession of a firearm, one person was arrested for assault with a deadly weapon on a police officer and one was arrested for discharging a laser at an LAPD airship, police said.

Two LAPD officers were hurt, police said.

The arrests came after LA Mayor Karen Bass issued an overnight curfew for about 1 square mile of downtown.

-ABC News’ Alex Stone