Background
In 2023, six months after a mass shooting at a Chicago-area Independence Day parade killed seven people and wounded dozens, Illinois enacted the Protect Illinois Communities Act. The Act criminalizes the manufacture, sale, and possession of assault weapons and large-capacity magazines (defined as magazines holding more than 10 rounds for rifles and shotguns). It includes grandfather clauses permitting pre-existing lawful owners to continue possessing the banned items if they register them.
Multiple plaintiffs—individuals, firearms dealers, and Second Amendment advocacy organizations—sued state and local officials in four consolidated cases, challenging the Act’s constitutionality under the Second Amendment. The district court granted preliminary injunctions and later, after a bench trial, held that the Act violated the Second Amendment and enjoined its enforcement entirely. The defendants appealed.
The Court’s Holding
The Seventh Circuit reversed the district court’s injunction and upheld the Act as constitutional. Applying the two-step framework established in New York State Rifle & Pistol Ass’n v. Bruen, the court assumed (without deciding) that AR-15s and thirty-round magazines qualify as “Arms” protected by the Second Amendment’s plain text. The court proceeded directly to the second step: whether the Act is consistent with the nation’s historical tradition of firearm regulation.
The court held that it is. The opinion surveyed a lengthy historical record of weapons regulations, including Reconstruction-era restrictions on Bowie knives, nineteenth-century state laws, and the federal machine gun ban. The court emphasized that the nation has long restricted particularly dangerous weapons deemed to pose exceptional lethality, and that AR-15s and large-capacity magazines fit squarely within this tradition. The opinion noted that all federal circuits addressing the question have reached the same conclusion, and that Bruen does not require precise founding-era analogues but permits courts to rely on principles drawn from the historical tradition.
Key Takeaways
- AR-15-style semiautomatic rifles and thirty-round magazines are subject to constitutionally permissible regulation under the Second Amendment.
- States may ban weapons deemed especially dangerous without violating Bruen’s historical-tradition test, drawing on a long regulatory tradition spanning Bowie knives to modern machine gun bans.
- All six federal circuit courts to address assault weapon restrictions post-Bruen have now upheld them, creating uniform circuit consensus on the issue.
- Courts need not locate precise historical comparators but may identify principles from the nation’s historical firearm-regulation tradition to justify modern restrictions.
Why It Matters
This decision marks the first comprehensive circuit-court analysis of assault weapon and large-capacity magazine bans under Bruen’s historical-tradition framework. With all circuits now aligned, state assault weapon restrictions have a solid constitutional foundation. The ruling also clarifies that Bruen permits a flexible historical-tradition inquiry—courts need not demand exact founding-era analogues for every modern regulation but may instead distill principles from the nation’s long history of restricting dangerous weapons. This resolves significant post-Bruen uncertainty and gives concrete content to the historical-tradition prong.
The reversal means the Illinois law remains in effect statewide. For plaintiffs, further appellate options appear limited. The Supreme Court declined to grant certiorari when presented with a similar challenge at the preliminary injunction stage, suggesting the Court may not view this issue as ripe for review. State legislatures considering or implementing assault weapon restrictions can now proceed with substantially greater confidence that such laws will survive constitutional scrutiny.