Trump Sues Connecticut Over Sanctuary Policies

The Trump administration sued Connecticut and New Haven last week, accusing the state and city of violating the Supremacy Clause of the U.S. Constitution by restricting how much local and state resources can be used to help federal immigration authorities do their jobs.

The lawsuit names Gov. Ned Lamont, New Haven Mayor Justin Elicker, and state Attorney General William Tong as defendants, along with the State of Connecticut and the City of New Haven itself. The federal government’s argument is straightforward: Connecticut’s sanctuary policies effectively preempt federal immigration law, which the Supremacy Clause says is the supreme law of the land. Full stop.

Connecticut’s three named officials say the argument is backwards.

“Our laws do not prevent federal authorities from enforcing immigration law,” Lamont said in an email statement Tuesday. “Rather, they reflect a longstanding principle: the federal government cannot require states to use their personnel or resources to carry out federal enforcement responsibilities.” That distinction matters enormously. It’s the difference between a state blocking federal action and a state simply declining to do the federal government’s work for free.

What the Supremacy Clause Actually Says

The clause, found in Article VI of the Constitution, declares federal law the supreme law of the land. But courts have repeatedly held that the federal government can’t conscript state and local officials into enforcing federal programs. That doctrine, called the anti-commandeering principle, dates back to a 1992 Supreme Court ruling and was reinforced in 2018. Connecticut’s defense will almost certainly lean on it.

The Trump administration is betting that sanctuary policies cross a line from passive non-participation into active obstruction. It’s a legal theory that hasn’t succeeded in federal court before. But that hasn’t stopped the administration from filing.

The Political Math

This is Connecticut. Lamont, Elicker, and Tong aren’t going to fold.

Tong was blunt about it Tuesday. “It is a shame that the President and the Department of Justice are not focused on public safety but are wasting federal resources on attacking Connecticut with a baseless lawsuit that has no foundation in law or fact,” he said. “We will defend Connecticut and Connecticut families and fight this lawless attack with every fiber of our being.”

Elicker echoed that framing at a press conference Tuesday and later on Instagram, keeping the message simple: enforcing immigration law is the federal government’s job. “It is not our job,” he said.

U.S. Sen. Richard Blumenthal called the suit “a baseless and wasteful misuse of federal resources.” He argued the administration should be focusing on what he described as “alarming, often illegal conduct by CBP and ICE” rather than targeting Connecticut’s Trust Act, the state law that limits how police can cooperate with immigration agents. “This suit is about politics, not public safety, and represents a clear federal overreach into lawful state policy,” Blumenthal said.

What It Means for Your Town

For Connecticut’s suburban communities, this lawsuit lands differently depending on where you live. Greenwich, Westport, and the Gold Coast towns tend to have smaller immigrant populations than Bridgeport, New Haven, or Stamford. But the legal outcome will set rules that apply statewide.

If the federal government prevails, local police departments across Connecticut could find themselves pulled into immigration enforcement work they aren’t trained for, aren’t funded to do, and that many residents in their communities would oppose. Chiefs in several Connecticut cities have argued publicly that cooperation with ICE erodes the community trust they need to solve crimes. That’s not a liberal talking point. It’s an operational concern.

The Trust Act, which is at the center of the federal complaint, generally bars Connecticut law enforcement from detaining someone solely on the basis of an immigration detainer request unless a judge has signed off. The administration says that’s obstruction. Connecticut says that’s just due process. A federal court will have to sort it out.

Reporting from the New Haven Independent first laid out the details of the complaint and the initial responses from state and city officials.

What to Watch

The defendants have promised to fight, and given Connecticut’s resources and Tong’s track record of litigation against the first Trump administration, this case will move slowly and loudly. Watch for a motion to dismiss, which will be Connecticut’s first real legal test of whether the federal theory holds up.

The Tenth Amendment and anti-commandeering doctrine will be central to that brief. And if the case survives early motions, it could reach the Supreme Court at a moment when the court’s composition makes the outcome genuinely uncertain. Not a great position for a state that has built its immigration policy around the assumption that federal commandeering is off the table.