Justice Department Sues Maryland, Escalating Trump's War on Sanctuary States

The Trump administration filed suit against the state of Maryland, opening a new front in its campaign to dismantle so-called sanctuary policies by taking one of the nation's most Democratic states to federal court over laws that limit local cooperation with immigration agents.

The complaint, lodged July 9 in the U.S. District Court for the District of Maryland, targets the state's Community Trust Act, enacted as Senate Bill 791. The law restricts how state and local authorities may work with federal immigration officials, and it broadly bars state and local law enforcement from detaining people for U.S. Immigration and Customs Enforcement without a judicial warrant. The Justice Department is seeking declaratory and injunctive relief to block the statute's key provisions.

At the heart of the government's argument is the Constitution's Supremacy Clause, which establishes that federal law generally overrides conflicting state law. "The State's and City's intentional efforts to obstruct federal law enforcement put citizens at risk and are preempted," the department contends, framing Maryland's approach as an unlawful attempt to hamstring a core federal function. Officials say the policies have already disrupted immigration operations, forcing federal officers to miss chances to take custody of people they allege are in the country illegally by refusing to honor detainer requests.

Maryland officials have defended the Community Trust Act as a public-safety measure, arguing that when local police are seen as an arm of federal immigration enforcement, immigrant communities stop reporting crimes and cooperating with investigations. Supporters of such laws also note that ICE detainers are administrative requests, not judicial warrants, and that honoring them without court authorization can expose local governments to their own constitutional liability.

The Maryland suit does not stand alone. The Justice Department's Civil Division described it as the latest in a coordinated series of challenges to similar measures in Colorado, Connecticut, Illinois and New York — a deliberate legal offensive aimed at forcing Democratic-led jurisdictions to abandon policies the administration views as obstruction. Each case tees up the same underlying question about where state authority ends and federal power begins.

The litigation sets the stage for a protracted courtroom battle with implications well beyond Maryland's borders. However the district court rules, the dispute over whether states can decline to help enforce federal immigration law appears destined to climb toward the appellate courts — and potentially the Supreme Court — as the administration presses its immigration agenda through every available lever.