Deputy Attorney General Todd Blanche sent a letter to top California leaders warning them not to interfere with federal immigration enforcement, calling any attempt to arrest or impede agents “illegal and futile” after Rep. Nancy Pelosi and others threatened action against federal officers.

Deputy AG Todd Blanche warns Gov. Newsom, Rep. Pelosi and other state officials against interfering with federal agents

Fox News host Jesse Watters discusses Rep. Nancy Pelosi’s, D-Calif., comment that California officials can arrest I.C.E. agents if they break the law on ‘Jesse Watters Primetime.’

U.S. Deputy Attorney General Todd Blanche issued a formal letter to top California officials Thursday, warning them against any attempts to arrest or impede federal law enforcement officers enforcing immigration laws.

The letter, addressed to Gov. Gavin Newsom; state Attorney General Rob Bonta; Rep. Nancy Pelosi, D-Calif.; and San Francisco District Attorney Brooke Jenkins, stressed that federal agents and officers are carrying out lawful duties, and any interference by state or local officials is both “illegal and futile.”

The letter was sent after Pelosi, the former House Speaker, and Rep. Kevin Mullin, D-Calif., issued a statement Wednesday threatening to arrest federal agents if they break California law.

If convicted, the Democrats noted, President Donald Trump cannot pardon agents.

The DOJ warned former Speaker of the House Nancy Pelosi, D-Calif., against prosecuting federal agents enforcing immigration law. (Tom Williams/CQ-Roll Call, Inc via Getty Images)

“Reports of a planned mass immigration raid in the Bay Area are an appalling abuse of law enforcement power,” Pelosi and Mullin wrote in the statement. “While the President may enjoy absolute immunity courtesy of his rogue Supreme Court, those who operate under his orders do not. … The people of San Francisco will continue to stand with the patriotic immigrants who are the constant reinvigoration of America.”

Blanche shared his response in an X post, writing, “We just sent them a letter: Stand down or face prosecution. No one threatens our agents. No one will stop us from Making America Safe Again.”

The letter cites several federal statutes that criminalize assaulting, impeding or conspiring against federal officers, and notes the supremacy clause of the U.S. Constitution dictates state officials cannot prosecute federal agents for actions taken in the course of their duties.

Blanche directed California leaders to “preserve all written and electronic communications and records related to any attempts or efforts to impede or obstruct federal law enforcement officials,” forewarning that the Department of Justice will investigate and prosecute any official who violates federal statutes.

Federal agents walk outside the Edward R. Roybal Federal Building in Los Angeles Aug. 14. (Carlin Stiehl/Los Angeles Times via Getty Images)

“We urge you and other California officials to publicly abandon this apparent criminal conspiracy, to stop threatening law enforcement, and to prioritize the safety of your citizens,” Blanche wrote.

Pelosi’s office did not immediately respond to Fox News Digital’s request for comment.

Alexandra Koch is a Fox News Digital journalist who covers breaking news, with a focus on high-impact events that shape national conversation.

She has covered major national crises, including the L.A. wildfires, Potomac and Hudson River aviation disasters, Boulder terror attack, and Texas Hill Country floods.