Washington, D.C.’s Metropolitan Police Department will begin assisting U.S. Immigration and Customs Enforcement under an executive order signed Thursday by Chief Pamela A. Smith, marking a sharp shift from the city’s long-standing limits on immigration enforcement cooperation. The directive authorizes officers to share information about individuals not in police custody—such as those stopped for traffic violations—and to provide transportation for ICE personnel and detainees. It bars officers from querying immigration databases solely to determine status and from making arrests based only on civil immigration warrants. Smith’s order follows President Donald Trump’s decision earlier this week to place the District’s police force under temporary federal control and dispatch about 800 National Guard troops to bolster patrols. Federal and local authorities reported 45 arrests on Wednesday night, 29 involving people in the country illegally, as part of the broader crime crackdown. The new cooperation framework, effective immediately, departs from policies that had positioned Washington as a quasi-sanctuary jurisdiction. Trump can maintain direct authority over the department for up to 30 days before congressional review, leaving the scope and duration of the expanded immigration enforcement still uncertain.