President Donald Trump has posted two letters on his social media platform announcing new tariffs on the European Union and Mexico.

Trump will impose a 30% tariff on Mexico due to fentanyl crossing the border and a 30% tariff on the EU as a result of the U.S. trade deficit.

-ABC News' Kelsey Walsh

The federal judge who temporarily barred the Trump administration from conducting broad, untargeted immigration stops and arrests in parts of California was "undermining the will of the American people," the Department of Homeland Security said.

"America's brave men and women are removing murderers, MS-13 gang members, pedophiles, rapists -- truly the worst of the worst from Golden State communities," the department said in a statement.

U.S. Attorney Bill Essayli, of California's Central District, said federal agents "will continue to enforce the law and abide by the U.S. Constitution."

"We strongly disagree with the allegations in the lawsuit and maintain that our agents have never detained individuals without proper legal justification," he said in a statement.

-ABC News' Jack Moore

A federal judge on Friday temporarily barred the Trump administration from conducting broad, untargeted immigration stops and arrests in parts of California.

The temporary restraining order blocks the Department of Homeland Security from making arrests of people based solely on factors like race, accent, the type of work they do and their presence at a particular location -- such as day laborer pick up sites and agricultural sites.

The order comes after a lawsuit filed by immigrant advocacy groups accused federal agents of targeting Latino communities with unconstitutional tactics — including warrantless arrests, racial profiling and denying access to legal counsel.

Judge Maame Ewusi-Mensah Frimpong, a Biden appointee, sided with the ACLU of Southern California and other groups who filed the lawsuit, finding that "roving patrols" without reasonable suspicion are unconstitutional.

"What the federal government would have this Court believe —in the face of a mountain of evidence presented in this case—is that none of this is actually happening," Frimpong wrote.

Notably, the judge’s decision applies to several counties including Los Angeles and Ventura, where an immigration enforcement operation at a cannabis farm turned violent when protesters clashed with agents.

The judge will hold a hearing on the case in the coming days.

-ABC News' Armando Garcia

Referencing clashes between federal agents and protesters during recent Immigration and Customs Enforcement raids, President Donald Trump said he's directed Secretary of Homeland Security Kristi Noem and border czar Tom Homan to authorize ICE and other law enforcement officers to arrest anyone they believe is assaulting them.

In a new social media post, Trump said he is giving "total authorization" that allows officers to protect themselves and to detain alleged offenders immediately.

"I am on my way back from Texas, and watched in disbelief as THUGS were violently throwing rocks and bricks at ICE Officers while they were moving down a roadway in their car and/or official vehicle," Trump said in the post. " Tremendous damage was done to these brand new vehicles."

The post went on to say: "I never want to see a car carrying a Law Enforcement Officer attacked again! AUTHORIZATION IMMEDIATELY GRANTED FOR ARREST AND INCARCERATION."

Trump didn't specify which incident he was referring to in his post. In California on Thursday, federal agents clashed with protesters during a raid at what the Department of Homeland Security said was a marijuana farm.

-ABC News' Kelsey Walsh