A three-judge panel of the U.S. Court of Appeals for the Seventh Circuit in Chicago pressed the U.S. Department of Justice hard on Thursday, October 29, 2026, as federal lawyers urged the court to revive the Trump administration's lawsuit against Illinois, Cook County and the city of Chicago over their sanctuary policies — laws that limit how far state and local officers may cooperate with federal immigration enforcement.
Source: Law.com / National Law Journal
The policies at the centre of the case do two specific things, according to the court reporting. They bar the transfer of criminal noncitizens from state or local custody to federal custody without a judicial warrant, and they prohibit state and local officers from sharing a detainee's release date with federal immigration officials. The Justice Department argues, as an allegation in its lawsuit, that those limits are unconstitutional and obstruct federal immigration law.
What the judges asked
Judges Kenneth F. Ripple, Michael Y. Scudder and Rebecca Taibleson heard the argument. Bloomberg Law reported that the panel closely questioned Justice Department lawyer Michael Talent on what kind of burden the Illinois policies actually impose. Judge Scudder acknowledged that the policies make immigration enforcement more challenging and more expensive, but asked how those difficulties rise to the level of presenting an obstacle or barrier to enforcement — the legal threshold the federal government must meet.
Source: Bloomberg Law
WTTW reported that the panel peppered attorneys for all four governments — the United States, the state of Illinois, Cook County and the city of Chicago — with questions as it weighed whether to overturn the dismissal of the lawsuit. Law.com's account of the hearing ran under the headline "'What's Your Beef?'", reflecting the scepticism federal lawyers faced about what concrete injury the policies cause.
How the case got here
The lawsuit was dismissed at the district-court level before this appeal. U.S. District Judge Lindsay Jenkins held that the federal government lacked standing to sue certain individual defendants over the policies and emphasised a long-standing federalism principle: Washington cannot force states to administer a federal regulatory programme. Her order made clear that states and cities may prevent their own officers from taking part in civil immigration enforcement, while still complying with criminal warrants and federal court orders.
The Justice Department's position, as reported from its filings and Thursday's argument, is that sanctuary-style laws restrict custody and release information, access to local detainees and participation in civil immigration enforcement, and that they are preempted by federal immigration statutes and discriminate against the United States by hamstringing its agents inside local jails and communities. Illinois, Cook County and Chicago defend their laws as a lawful choice about how their own officers spend their time and resources. Those are the competing claims before the court; the panel has not ruled.
Everyone in the case agrees local officers must honour criminal warrants and court orders. The fight is over civil immigration enforcement — detainers, release dates and custody transfers without a judge's warrant — and whether a state may keep its own officers out of that work.
Why it matters in Illinois
Chicago and Cook County are home to one of the largest immigrant populations in the American Midwest, including a long-established Punjabi and Sikh community in the city and its suburbs. Whether a person booked on a local charge can be handed directly to immigration agents — or must first see a judicial warrant — decides, in practical terms, how an ordinary arrest in Illinois can turn into a deportation case. That is why immigrant advocates, county officials and federal agents have all watched this lawsuit closely since it was filed, and why Thursday's argument drew national legal coverage within hours.
What happens next
The panel took the case under advisement and gave no ruling from the bench on Thursday, and no decision date was announced in the reporting. If the Seventh Circuit revives the lawsuit, the fight returns to the district court and the policies themselves would face a fresh merits challenge; if it affirms the dismissal, the Illinois, Cook County and Chicago policies stand, and the federal government would have to decide whether to seek further review. Until the court rules, the policies remain in effect exactly as they operated before Thursday's hearing.