District of Columbia Attorney General Brian Schwalb sought an emergency restraining order in the federal court lawsuit, which argues the Trump administration is going far beyond the president’s legal powers.

“The administration’s unlawful actions are an affront to the dignity and autonomy of the 700,000 Americans who call D.C. home. This is the gravest threat to Home Rule that the District has ever faced, and we are fighting to stop it,” Schwalb said.

The lawsuit comes after Trump Attorney General Pam Bondi said Thursday night that Drug Enforcement Administration boss Terry Cole will assume “powers and duties vested in the District of Columbia Chief of Police.”

The Metropolitan Police Department “must receive approval from Commissioner Cole” before issuing any orders, Bondi said.

It was unclear where the move left the city’s current police chief, Pamela Smith, who works for the mayor.

Washington Mayor Muriel Bowser pushed back, writing on social media that “there is no statute that conveys the District’s personnel authority to a federal official.”

The Justice Department declined to comment on the district’s lawsuit, and a White House spokesperson did not immediately respond to messages seeking comment.

Schwalb had said late Thursday that Bondi’s directive was “unlawful,” arguing it could not be followed by the city’s police force.

He wrote in a memo to Smith that “members of MPD must continue to follow your orders and not the orders of any official not appointed by the Mayor,” setting up the legal clash between the heavily Democratic district and the Republican administration.

The D.C. attorney general is an elected position that is the city’s top legal officer and is separate from Washington’s federal U.S. attorney, which is appointed by the president.

The U.S. attorney general is also appointed by the president and not elected.

Bondi’s directive came even after Smith had told MPD officers hours earlier to share information with immigration agencies regarding people not in custody, such as someone involved in a traffic stop or checkpoint.

The Justice Department said Bondi disagreed with the police chief’s directive because it allowed for continued enforcement of “sanctuary policies,” which generally limit cooperation by local law enforcement with federal immigration officers.

Bondi’s directive came even after Smith had told MPD officers hours earlier to share information with immigration agencies regarding people not in custody, such as someone involved in a traffic stop or checkpoint.

Bondi said she was rescinding that order as well as other MPD policies limiting inquiries into immigration status and preventing arrests based solely on federal immigration warrants.

All new directives must now receive approval from Cole, the attorney general said.

The police takeover is the latest move by Trump to test the limits of his legal authorities to carry out his agenda, relying on obscure statutes and a supposed state of emergency to bolster his tough-on-crime message and his plans to speed up the mass deportation of people in the U.S. illegally.

It also marks one of the most sweeping assertions of federal authority over a local government in modern times.

While Washington has grappled with spikes in violence and visible homelessness, the city’s homicide rate ranks below those of several other major U.S. cities, and the capital is not in the throes of the public safety collapse the administration has portrayed.

A population already tense from days of ramp-up has begun seeing more significant shows of force across the city. National Guard troops watched over some of the world’s most renowned landmarks, and Humvees took position in front of the busy main train station.

Volunteers helped homeless people leave long-standing encampments, to which was often unclear.