Federal Court Allows DOJ Illinois Sanctuary Lawsuit to Proceed

A federal judge has allowed the Justice Department’s lawsuit against Illinois’ sanctuary-state protections to continue, rejecting state officials’ request to dismiss the case before the court decides the central constitutional questions.

U.S. District Judge David W. Dugan entered the order on August 19, 2026. The Justice Department announced the ruling publicly on August 28. The defendants are the State of Illinois, Gov. JB Pritzker and Illinois Attorney General Kwame Raoul.

The ruling does not strike down Illinois’ laws or decide that they are unconstitutional. It means the federal government’s complaint was sufficient to survive an early challenge and proceed to the next stages of litigation.

What the judge ruled

Judge Dugan denied Illinois officials’ motion to dismiss under Federal Rules of Civil Procedure 12(b)(1) and 12(b)(6). The court found that the United States had plausibly alleged the elements needed for standing: an injury, a connection between the alleged injury and the challenged laws, and the possibility that a court could provide a remedy.

The court also found that the complaint plausibly alleged unlawful regulation of federal immigration enforcement and unlawful discrimination. But the judge expressly said he was not addressing the merits at this stage. Illinois has not lost the case, and no final ruling has been issued on whether the protections comply with the Constitution.

The order requires the defendants to answer the complaint within 14 days of August 19 under Rule 12(a)(4)(A). The supplied court order does not state a specific calendar date for that filing.

What Illinois’ laws do

The lawsuit challenges provisions in Illinois Public Act 104-0440, including the Illinois Bivens Act and the Court Access, Safety, and Participation Act, known as CASPA.

The Illinois Bivens Act creates a state-law civil cause of action for qualifying constitutional violations connected to civil immigration enforcement. It allows monetary, injunctive and declaratory relief. The statute also identifies factors a court may consider when evaluating punitive damages, including whether an officer was masked, failed to identify themselves, failed to use a required body camera, used a vehicle without an Illinois license plate or used crowd-control equipment.

CASPA protects qualifying parties, witnesses, potential witnesses and court companions from civil arrest while they are going to, attending or returning from a state-court proceeding. The protection covers the courthouse, its premises and surrounding public ways, including public ways within 1,000 feet of the courthouse.

The statute defines court companions to include people such as family members, interpreters, translators, health-care or social-service providers, advocates and people transporting a party, witness or potential witness. CASPA provides a civil remedy for false imprisonment that can include actual damages and $10,000 in statutory damages, along with other equitable or declaratory relief and attorney fees.

CASPA concerns civil arrests. The statute says it does not prevent execution of a criminal arrest warrant issued by a judge or a criminal arrest based on probable cause for an alleged criminal violation.

What the Justice Department argues

The Justice Department alleges that Illinois’ laws interfere with federal immigration operations and improperly regulate how federal officers carry out their duties. Its lawsuit relies in part on the Supremacy Clause, under which federal law takes priority over conflicting state action.

In allowing the case to proceed, Judge Dugan said the United States had plausibly alleged that the Illinois Bivens Act and CASPA regulate federal immigration enforcement. The court also accepted, for purposes of the early procedural stage, the government’s allegations that the laws could create operational, personal-liability and safety risks for federal officers.

Those allegations remain contested and have not been proven at trial. The order does not determine whether Illinois’ laws actually conflict with federal law.

Illinois’ position and public impact

Illinois has defended the measures as protections for access to state courts and for immigrants, witnesses and other court participants. The state’s position is that people should be able to take part in court proceedings without fearing civil arrest connected to federal immigration enforcement.

For residents, the immediate practical effect of the ruling is limited but important: the challenged protections remain in place while the lawsuit continues. The decision does not create a nationwide rule, bar federal immigration enforcement across the country or establish that federal officers are liable under the Illinois statutes.

What happens next

The immediate next step is the defendants’ answer to the complaint. After that filing, the parties could pursue discovery, additional motions, summary judgment or requests for preliminary or permanent relief.

The Illinois case could become an important test of how far states may go in protecting access to state courts while federal agencies conduct immigration operations. The Justice Department is pursuing related sanctuary-policy litigation elsewhere, but the Illinois case will turn on its own statutes, allegations and factual record.

For now, the result is procedural: the Justice Department’s lawsuit remains alive, Illinois must respond, and the court has not yet decided whether the state’s protections are constitutional.

Sources

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