President Donald Trump threatened to call a national emergency to justify taking control of Washington, D.C., after the city's mayor said the district's police would not cooperate with Immigration and Customs Enforcement.

The president took charge of the Metropolitan Police Department for 30 days starting Aug. 11 and activated the National Guard in what he described a crackdown on crime and homelessness. More than 2,000 troops remain on patrol despite the expiration of the deadline.

"The Federal Government, under my auspices as President of the United States of America, has stepped into the complete criminal mess that was Washington, D.C., our Nation’s Capital," Trump posted on Truth Social at 1:06 a.m. EST Sunday. "Because of this, D.C. has gone from one of the most dangerous and murder ridden cities in the U.S.A., and even around the World, to one of the safest – In just a few weeks."

Violent crime had fallen 35 percent in the district, to the lowest rate in over 30 years, by the start of this year before Trump even became president. Several reports also claimed the city had seen plunging tourism rates while businesses such as restaurants reported drops in customers — reports that Trump clearly disagreed with.

"The 'place' is absolutely booming, with restaurants, stores, and businesses packed and, for the first time in decades, virtually NO CRIME," Trump posted. "It has been a beautiful thing to watch but, now, under pressure from the Radical Left Democrats, Mayor Muriel Bowser, who has presided over this violent criminal takeover of our Capital for years, has informed the Federal Government that the Metropolitan Police Department will no longer cooperate with ICE in removing and relocating dangerous illegal aliens. If I allowed this to happen, CRIME would come roaring back."

"To the people and businesses of Washington, D.C., DON’T WORRY, I AM WITH YOU, AND WON’T ALLOW THIS TO HAPPEN," the president added. "I’ll call a National Emergency, and Federalize, if necessary!!! Thank you for your attention to this matter. MAKE AMERICA GREAT AGAIN!!! President DJT."