A Trump-appointed federal judge struck down key provisions of a Colorado law targeting the GEO Group's Aurora ICE Processing Center, ruling the state likely violated the Constitution by singling out a federal contractor for special regulatory burdens.
Chief U.S. District Judge Daniel Domenico issued a preliminary injunction blocking the most aggressive enforcement tools in House Bill 26-1276, the state law Democratic Gov. Jared Polis signed on June 4. The law required unannounced quarterly inspections of the Aurora facility, forced GEO Group to foot the bill for those inspections, and authorized civil penalties of up to $50,000 for each refusal to let state inspectors through the door.
Domenico found that Colorado "likely crossed a constitutional line" by crafting legislation that applied to one facility and one company, GEO Group, the private operator running the Aurora center under a federal ICE contract. The judge grounded his ruling in the Constitution's supremacy clause, which shields federal operations from state interference, and cited Supreme Court precedent extending that protection to private contractors carrying out federal work.
The judge's order left little ambiguity about what he saw in the bill. As of May, GEO's Aurora detention center was the only facility in Colorado subject to HB 1276's additional regulations. Domenico wrote in his order:
"Here, GEO has shown that it is singled out for a special bill that applies to no other facility."
Colorado's defense was that the law merely brought GEO into compliance with regulations already imposed on other detention facilities in the state. Domenico rejected that argument point by point. He noted the requirement for a specific number of unannounced visits "does not appear elsewhere," and the state itself acknowledged that the penalty scheme was not imposed on other facilities.
In a passage that cut directly at the state's legal theory, Domenico wrote:
"That other facilities might have some similar regulatory burdens does not change the fact that none of them are required to comply with HB 1276. As GEO notes, the extent of the additional burden is irrelevant for purposes of this test."
And he drove the conclusion home: the law "discriminates against GEO based on its status as a federal contractor." That finding placed the bill squarely in conflict with longstanding constitutional doctrine that states cannot selectively burden companies for the sin of doing business with the federal government.
The ruling fits a broader pattern of federal courts drawing hard lines when states try to use regulatory power to obstruct federal policy. Recent federal rulings on immigration-related legal challenges have repeatedly favored the federal government's authority over state-level resistance.
Domenico's injunction was not a blanket win for GEO. Several provisions of HB 1276 survived, including requirements related to reporting, staffing levels, health conditions, housing of minors, and onsite medical and mental health professionals. Those provisions stayed in place because Colorado told the court they were not currently being enforced and would require a future rulemaking process the state said it had no immediate plans to begin.
In practical terms, the judge blocked the provisions with teeth, the inspections and the $50,000-per-violation penalties, while leaving the softer mandates untouched for now. The injunction itself carries an expiration date: October 15, the day GEO's existing federal contract to operate the Aurora facility runs out.
That timeline gives the ruling a limited shelf life. But the constitutional principle Domenico established, that a state cannot write a law aimed at punishing a single federal contractor, will outlast the injunction if it holds on appeal.
Democratic Attorney General Phil Weiser moved quickly to frame the decision as a minor setback. In a statement issued the same day as the ruling, Weiser characterized the injunction as "narrow" and "temporary," emphasizing that it targeted only one provision and left the state's broader public health authority intact.
"Today's ruling granted the GEO Group a narrow, temporary injunction against one provision of a new 2026 law, not the broad relief it sought, and leaves Colorado's existing public health and safety authority intact."
But Weiser did not stop at spin. He disclosed that his office had filed a separate lawsuit against GEO the day before the injunction came down, a suit seeking to force the company to cooperate with a state investigation into tuberculosis at the Aurora facility. Health officials confirmed an active tuberculosis case at the center on June 22.
Weiser framed the TB lawsuit as independent from HB 1276, arguing the state's authority to investigate communicable diseases predates the new law and remains intact regardless of Domenico's ruling. The state alleges GEO has failed to provide the records and cooperation needed to determine the extent of potential exposure.
The timing raises an obvious question: if Colorado's existing public health powers were always sufficient, why did the legislature need to pass a bill imposing a new inspection regime with $50,000 penalties on a single facility? Courts have increasingly recognized that states sometimes dress up political objectives in regulatory clothing, and judges are not obligated to play along.
Colorado's Aurora ICE Processing Center is the only ICE detention facility in the state. That fact made HB 1276 unusual from the start. The legislature did not write a general law governing all detention facilities. It wrote a law that, by Domenico's finding, applied to exactly one company operating exactly one site.
Gov. Polis signed the bill anyway. Fox News Digital reached out to his office for comment on the ruling but received no response. GEO Group was also contacted; no response was reported.
The silence from the governor's office is notable given the political stakes. Colorado Democrats passed HB 1276 as part of a broader effort to assert state authority over federal immigration enforcement, an effort that has gained traction in blue states since the Trump administration expanded ICE operations. Domenico's ruling did not merely slow that effort down. It identified a constitutional defect at the foundation: you cannot single out a federal contractor for punitive treatment and call it general regulation.
The ruling echoes a principle courts have applied in other contexts where state governments have tried to use targeted legislation to achieve policy goals the Constitution reserves to the federal government. Federal judges have struck down state-level regulatory schemes in multiple policy areas when the targeting becomes too precise to survive constitutional scrutiny.
With the injunction set to expire on October 15 alongside GEO's federal contract, the immediate practical impact may be limited. But the legal precedent is not. If Domenico's reasoning holds, states that try to regulate federal immigration contractors out of existence will need to find a less transparent way to do it, or accept that the supremacy clause still means what it says.
Colorado's separate tuberculosis lawsuit against GEO remains pending, and the outcome of that case could shape the next round of this fight. The state's claim that GEO has refused to cooperate with a public health investigation is serious on its own terms. But it is also, conveniently, a second front opened the day before a federal judge told Colorado its first offensive had a constitutional problem.
Federal courts have shown increasing willingness to reject state-level legal maneuvers designed to obstruct federal immigration policy, a trend that should give Colorado's political leadership pause before the next round of legislation.
When a state writes a law that targets one company, at one address, doing one kind of work for the federal government, and a federal judge says the Constitution does not allow it, the problem is not the judge. The problem is the law.