Protests live updates: Marines make 1st temporary detention in LA

President Donald Trump said Monday he thinks it would be a "great thing" if border czar Tom Homan arrests California Gov. Gavin Newsom.

"I would do it if I were Tom. I think it's great," Trump said as he arrived at the White House from Camp David. "Gavin likes the publicity, but I think it would be a great thing."

Newsom responded on social media, writing, "The President of the United States just called for the arrest of a sitting Governor. This is a day I hoped I would never see in America. I don’t care if you’re a Democrat or a Republican this is a line we cannot cross as a nation -- this is an unmistakable step toward authoritarianism."

Trump called the protesters "professional agitators" and "insurrectionists, bad people."

"They should be in jail," Trump said at the White House.

Ahead of his arrival at the White House, Trump on social media stood by his decision to send the National Guard to Los Angeles. He also argued that Newsom and LA Mayor Karen Bass were not grateful enough for his assistance, despite both officials stating that Trump’s move escalated the violence.

Trump wrote, "The very incompetent 'Governor,' Gavin Newscum, and 'Mayor,' Karen Bass, should be saying, 'THANK YOU, PRESIDENT TRUMP, YOU ARE SO WONDERFUL. WE WOULD BE NOTHING WITHOUT YOU, SIR.'"

-ABC News’ Lalee Ibssa

The city manager of Glendale, California, is terminating a contract with the Department of Homeland Security that required the Glendale Police Department to house some immigration detainees at its facility, according to a statement on the city website.

Several law enforcement agencies across the country have similar contracts with DHS, which are limited in scope and do not require local law enforcement to help bring undocumented immigrants into custody.

The press release does not mention the Los Angeles protests but acknowledges that the contract "has become divisive" and that the decision to terminate it "was not made lightly."

"Nevertheless, despite the transparency and safeguards the City has upheld, the City recognizes that public perception of the ICE contract -- no matter how limited or carefully managed, no matter the good -- has become divisive," the statement said. "And while opinions on this issue may vary -- the decision to terminate this contract is not politically driven. It is rooted in what this City stands for -- public safety, local accountability, and trust."

-ABC News’ Armando Garcia

Rep. Linda Sanchez, the House Democrat representing the Los Angeles area experiencing the unrest, is condemning the ICE raids and blaming President Donald Trump for enforcing a "cruel and broken immigration system."

ICE's presence "does not make our neighborhoods safer. Instead, they are tearing families apart, traumatizing children and undermining trust with our local officials and law enforcement," Sanchez said in a statement. "The Trump administration’s raids serve no purpose other than to stoke fear and enforce a cruel and broken immigration system."

Sanchez added that she’s working to learn whether any of the ICE detentions were unlawful.

-ABC News’ John Parkinson

Trump administration border czar Tom Homan refuted claims that he was going to arrest Los Angeles Mayor Karen Bass and California Gov. Gavin Newsom, telling Fox News that an interview from this weekend was taken out of context.

"The reporter asked about, 'Could Governor, Governor Newsom, or Mayor Bass, be arrested?' I said, 'Well, no one's above the law, if they cross the line and commit a crime. Absolutely they can,'" Homan explained. "So there was no discussion about arresting Newsom."

Homan asserted that he was speaking broadly that if anyone "crosses the line," they will be prosecuted.

"You can protest. You got your First Amendment rights. But when you cross that line, you put hands on an ICE officer, or you destroy property, or ICE says that you're impeding law enforcement … that's a crime, and that the Trump administration is not going to tolerate," he said.

President Donald Trump offered similar comments on Sunday, saying if California officials "stand in the way of law and order, yeah, they will face charges."

-ABC News’ Lalee Ibssa