A single federal judge in Denver has effectively slapped handcuffs on Immigration and Customs Enforcement in Colorado, sharply limiting when federal officers can arrest people without a warrant in a way no other law‑enforcement agency in the state has to endure. Senior U.S. District Judge R. Brooke Jackson’s preliminary injunction all but bans ICE’s warrantless civil immigration arrests here unless agents can clear a two‑step probable‑cause test that critics say amounts to judicial overreach and a dangerous constraint on enforcing federal law.
A special set of handcuffs for ICE
For most Colorado peace officers, the rule for a warrantless arrest is straightforward: they need probable cause that a crime has been committed and that the suspect committed it, with no extra statewide requirement to prove in advance that the person is “likely to escape” before acting. By contrast, Jackson’s order tells ICE it may not arrest without a warrant in Colorado unless an agent first has probable cause both that the person is in the country in violation of immigration law and that the person is likely to flee before a warrant can be obtained—and the agency must document those findings.
In practice, that creates a higher and more bureaucratic bar for federal immigration officers than for the state trooper stopping a drunk driver or the deputy responding to a burglary, who can act on ordinary probable cause without writing up a separate, pre‑arrest “flight‑risk” case file. For critics, that double standard is the core problem: one class of armed officers now operates under judicially enforced conditions that do not apply to anyone else wearing a badge in Colorado.
Critics see judicial overreach, not mere oversight
Supporters of the Trump administration’s interior‑enforcement surge say Jackson has gone far beyond simply enforcing the law and has effectively rewritten how federal immigration officers must do their jobs in one state. With Congress having just approved tens of billions of dollars to expand ICE detention space and hire thousands of new officers, they argue, a trial judge is now using an old statute to engineer the practical equivalent of a near‑moratorium on warrantless civil arrests by ICE in Colorado’s interior communities.
Administration allies are already describing the order as “activist” and “hamstringing” and are expected to ask the Tenth Circuit for an emergency stay, warning that Jackson’s formula will force ICE to slow‑walk arrests of people they consider public‑safety threats while other officers remain free to act immediately on probable cause. To them, this is not just a technical dispute over paperwork but a separation‑of‑powers fight in which one judge is dictating on‑the‑ground arrest rules for an entire federal agency across an entire state.
What Jackson says he is enforcing
Jackson’s defenders, led by the ACLU of Colorado and private immigration lawyers, insist the judge is not inventing a new policy but finally forcing ICE to obey the limits Congress itself wrote into 8 U.S.C. § 1357(a)(2) nearly 80 years ago. That statute has long said immigration officers may arrest without a warrant only if they have probable cause that someone is here unlawfully and probable cause that the person is likely to escape before a warrant can be obtained, but plaintiffs say ICE has treated the second half of that sentence as optional in its Colorado sweeps.
According to the complaint and the motion for a preliminary injunction, Jackson’s order responds to a pattern of raids—at apartment complexes, nightclubs, workplaces, and traffic stops—where agents admit they never asked basic questions about community ties or flight risk before hauling people to Aurora, all while an internal quota of 3,000 immigration‑related arrests a day loomed in the background. In that telling, the real overreach came from the executive branch, and the court is simply restoring a high, but long‑ignored, statutory bar on ICE’s most intrusive power.
Four stories behind the legal fight
The lawsuit is built around four Coloradans whose experiences illustrate, for supporters of the ruling, why ICE cannot be trusted with broad warrantless‑arrest authority.
- Refugio Ramirez Ovando, a 43‑year‑old construction worker and now lawful permanent resident, has spent roughly 20 years in Colorado raising four U.S.‑citizen children; he was pulled over near his Grand Junction‑area home on his way to work, arrested without a warrant after agents later conceded they were actually hunting someone else, and detained in Aurora for more than three months while his family went into debt and his children developed serious mental‑health issues.
- Dreamer and University of Utah student Caroline Dias Goncalves was stopped near Fruita by a Mesa County sheriff’s deputy, released with a warning, and then arrested minutes later by ICE after the deputy secretly tipped off federal agents via an encrypted message—conduct the state Attorney General later said violated Colorado’s anti‑collaboration law. She spent 15 days in the Aurora detention facility, lost a job, moved back in with her parents, and now wears an ankle monitor while trying to continue college.
- Asylum‑seeker J.S.T., a 15‑year Colorado resident who had worked nearly a decade at the same grocery store, was grabbed in his car during a dawn raid at Aurora’s Whispering Pines Apartments after agents in tactical gear blocked exits and went door‑to‑door; he was held for nearly a month, lost his apartment and belongings, and now struggles with unstable housing and fear of re‑arrest.
- Colorado Springs construction worker and business owner G.R.R., a father of a U.S.‑citizen child, was serving as a designated driver outside a nightclub when hundreds of agents flooded the club with tear gas, locked exits, and funneled patrons into an armed perimeter; he was zip‑tied, shackled, transported to Aurora, and detained more than six weeks, suffering an inadequately treated hand injury and losing vital income.
Critics of the injunction do not dispute that these people endured hardship; they argue that even painful cases cannot justify imposing novel, judge‑designed restraints on ICE that leave other officers free to rely on ordinary probable‑cause rules.
Colorado’s own rules and officers caught in the middle
Layered on top of Jackson’s order is Colorado’s own decision to distance local government from federal civil immigration enforcement. Under C.R.S. 24‑76.6‑102 and related statutes, sheriffs and police departments may not detain someone solely on the basis of a civil immigration detainer or delay their release just to give ICE time to pick them up, because that is treated as a new warrantless arrest under state law. A 2025 law tightened those limits, restricting new cooperative agreements and authorizing civil penalties and injunctive relief against agencies or officials that go beyond what the state allows.
The disciplinary case against the Mesa County deputy who helped set up Dias Goncalves’ arrest shows the risk for local officers who try to fill the gap ICE now faces: state investigators concluded he violated Colorado’s immigration‑law restrictions and recommended major discipline for helping federal agents in a civil enforcement action. With Jackson’s injunction on one side and state law on the other, federal agents face stricter pre‑arrest conditions than any other law‑enforcement agency in Colorado, while local departments risk lawsuits and sanctions if they act as a bridge for ICE anyway.
A high‑stakes appeal
The Justice Department is widely expected to appeal to the Tenth Circuit, likely asking for a rapid stay by arguing that Jackson’s injunction intrudes on the executive branch’s authority to decide when and how to use its congressionally granted arrest powers. Plaintiffs will counter that the judge is simply enforcing the dual probable‑cause and flight‑risk requirement Congress wrote into § 1357(a)(2), and that courts have long been allowed to stop agencies from implementing illegal “patterns and practices” that sweep up people without the process the law requires.
The outcome will determine whether Jackson’s approach remains a Colorado‑only experiment in putting heavier handcuffs on ICE than on any other officers in the state—or becomes a blueprint for other federal judges and blue‑leaning states to follow in trying to constrain a Trump‑era enforcement machine they view as out of control.
Support Independent Local Journalism — High Country Advocate was created as a real alternative to regional media that too often silences dissenting voices while taking sides in the political struggle. Producing in-depth, unflinching reporting like this series and others is expensive: servers, editing, research time, and legal review all add up quickly. If these articles have informed you or given you new perspective, please consider supporting HCA with a paid subscription — every subscriber helps keep this reporting strong and independent. 