What court rulings have specifically limited federal use of tear gas in Chicago and what are their current statuses?

Checked on January 17, 2026
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Executive summary

A U.S. district judge, Sara L. Ellis, imposed sweeping restrictions on federal immigration agents’ use of tear gas, pepper balls and other crowd‑control measures in Chicago after finding evidence that agents repeatedly used force that “shocks the conscience” and lied about incidents [1]; parts of that order were later paused by a 7th U.S. Circuit Court of Appeals panel that said the district court had overstepped by impermissibly micromanaging the Executive Branch [2]. The litigation remains active: some restrictions were extended by the district court, the government has appealed and an appellate stay means the practical effect of the injunction is limited while the courts sort the constitutional and supervisory boundaries [3] [2] [4].

1. The district‑court injunction that curtailed tear gas use

Judge Ellis issued a preliminary injunction after testimony and video evidence that federal agents used tear gas, pepper balls and other force without warning against protesters, journalists and clergy, concluding there was evidence of First Amendment and Free Exercise violations and that some agents “indiscriminately” fired munitions into crowds [1] [5]; her order refined earlier temporary orders — which had required agents to wear badges and banned certain riot‑control techniques against peaceful protesters and journalists — into broader, more specific limits on the use of chemical agents in the Chicago area [5] [6].

2. The 7th Circuit’s emergency stay and its reasoning

The Department of Justice appealed and an appellate panel granted the government’s emergency request to pause Ellis’s order, holding that the district judge’s directives had the “practical effect” of enjoining all Executive Branch law enforcement and thus impermissibly intruded on separation‑of‑powers grounds, while also noting the plaintiffs may still have meritorious claims and that a more narrowly tailored order could be appropriate [2].

3. Extensions, enforcement problems, and collateral rulings

Despite the appellate stay, the district court has taken further steps — including an indefinite extension of certain restrictions on immigration agents’ use of riot control weapons like tear gas — and at times ordered specific remedies such as requiring a Border Patrol commander to report to court after incidents, actions that an appeals panel later curtailed as beyond the judge’s supervisory authority [3] [1].

4. Current legal posture: contested, partially stayed, and litigated

As of the most recent reporting, the injunction’s substantive limits on tear gas and related munitions exist on paper through district‑court orders and extensions, but their operative force is blunted by the 7th Circuit’s emergency pause and ongoing appeals; the underlying civil lawsuit remains active, dismissal motions have been litigated and the parties continue to dispute enforcement and scope in court filings [2] [4] [3].

5. Competing narratives and what each side claims

Plaintiffs — protesters, journalists and clergy represented in the suit — say video and testimony show agents used chemical agents without warning and lied about events, asserting constitutional violations that justify court limits on force [1] [5]; the federal government counters that agents used tear gas only when there was an immediate threat, defends its tactics as lawful, and argued to the appeals court that district orders improperly micromanage national law enforcement, a position DHS framed as protecting officers’ ability to act [6] [2].

6. Implications and what to watch next

The key questions for the coming months are whether the 7th Circuit or a higher court will narrow or reinstate parts of Ellis’s injunction, whether the district court’s fact‑finding about misconduct survives appellate scrutiny, and whether a more carefully tailored injunction will be crafted if the appeals court keeps its separation‑of‑powers objection — all of which will determine whether the formal limits on tear gas translate into sustained operational constraints in Chicago [2] [3] [4].

Want to dive deeper?
What specific incidents and videos did Judge Sara Ellis rely on in finding excessive force by federal agents in Chicago?
How have appeals courts historically balanced separation‑of‑powers concerns against district judges’ injunctions on federal law‑enforcement tactics?
What oversight mechanisms exist within DHS/ICE/Border Patrol for use of crowd‑control munitions and how were they applied in Operation Midway Blitz?