Background
Following a mass shooting at an Independence Day parade in a Chicago suburb that killed seven people, Illinois enacted the Protect Illinois Communities Act in 2023. The Act criminalizes manufacture, sale, delivery, purchase, and possession of assault weapons (including AR-15s), large-capacity magazines (more than 10 rounds for rifles), and assault weapon attachments. The Act includes grandfather clauses permitting existing lawful owners to retain these items through registration.
Multiple plaintiffs—individuals, firearm businesses, and gun rights organizations—sued state and local officials under 42 U.S.C. § 1983, challenging the Act’s constitutionality under the Second Amendment. Four consolidated cases proceeded to the Southern District of Illinois. The district court held that the Act violated the Second Amendment and enjoined its enforcement entirely. Defendants appealed to the Seventh Circuit.
The Court’s Holding
The Seventh Circuit reversed the district court’s injunction and upheld the Act as constitutional. The court assumed for purposes of review that AR-15s and 30-round magazines qualify as “Arms” protected by the Second Amendment’s plain text, but held that Illinois satisfied its burden under the second step of the test established in New York State Rifle & Pistol Ass’n v. Bruen, 597 U.S. 1 (2022). Specifically, the court found that the Act’s restrictions are consistent with the nation’s historical tradition of firearm regulation.
The court identified a longstanding regulatory tradition targeting particularly dangerous weapons, spanning from pre-Founding going-armed laws through Reconstruction-era restrictions on Bowie knives to 20th-century machine gun bans. The court rejected the district court’s determination that historical analogues were insufficient, concluding that legislatures have consistently restricted weapons whose danger and lethality stand out. The court noted that all federal circuits that have addressed assault weapons and large-capacity magazines have reached the same conclusion that such restrictions are constitutionally permissible.
Key Takeaways
- AR-15s and 30-round rifle magazines may constitutionally be banned as consistent with historical tradition of regulating dangerous weapons.
- The Second Amendment right, while fundamental, is not unlimited and does not prohibit targeted restrictions on particularly dangerous weapons.
- State legislatures retain authority to determine whether to adopt restrictions on especially dangerous weapons based on historical precedent.
- The court did not resolve constitutionality of the Act’s application to all regulated items (such as assault pistols and shotguns) or all banned weapons, leaving those issues for future as-applied challenges.
- Circuit consensus supports assault weapons restrictions: all federal courts of appeals to address this issue have upheld such bans.
Why It Matters
This decision validates state authority to impose broad firearms restrictions based on historical tradition under Bruen. For practitioners and states, it confirms that assault weapons and large-capacity magazine bans survive Second Amendment scrutiny when properly grounded in analogous historical regulations. The court’s reliance on a continuous tradition of restricting weapons of exceptional lethality—from Bowie knives to machine guns—establishes a durable framework for evaluating modern restrictions.
The decision also resolves uncertainty following the preliminary injunction stage and creates national consistency: Illinois’s ban now stands alongside similar restrictions in multiple states and federal law. However, the court’s narrow focus on AR-15s and 30-round magazines and its disclaimer that it does not address pistols, shotguns, or other restricted items suggests that future litigation on the Act’s application to specific weapons categories remains possible.