A Landmark Decision for Firearms Law—and a Major Check on ATF Authority
On June 14, 2024, the U.S. Supreme Court issued one of the most consequential firearms‑related rulings in recent history: Garland v. Cargill. In a 6–3 decision, the Court held that bump stocks are not machine guns under federal law, and therefore the ATF exceeded its authority when it attempted to ban them through regulation.
For responsible gun owners, instructors, and retailers like C.O.P.S., Inc., this case isn’t just about bump stocks. It’s about agency overreach, statutory clarity, and the future of federal firearms regulation.
This post breaks down what happened, why it matters, and what Illinois residents need to know moving forward.
What Was Garland v. Cargill About?
After the tragic 2017 Las Vegas shooting, the ATF reversed nearly a decade of prior guidance and declared that bump stocks were “machine guns” under the National Firearms Act (NFA). This reinterpretation:
- Criminalized possession overnight
- Required owners to destroy or surrender their devices
- Imposed felony penalties without any new act of Congress
Michael Cargill, a Texas gun owner, surrendered his two bump stocks under protest and sued. His argument was simple: ATF cannot rewrite criminal law. Only Congress can.
The Supreme Court agreed.
Why the Supreme Court Struck Down the ATF’s Ban
1. The Statutory Definition Controls
The NFA defines a machine gun as a firearm that fires more than one shot automatically with a single function of the trigger.
A bump stock does not do that.
The trigger still moves and resets for each shot. The shooter must maintain forward pressure. The rifle does not fire “automatically” in the legal sense.
2. Agencies Cannot Create New Crimes
The ATF attempted to criminalize possession of a device without Congress passing a law. The Court made it clear: regulators cannot expand criminal liability through interpretation.
3. Chevron Deference Doesn’t Apply to Criminal Statutes
For decades, courts deferred to agencies when interpreting ambiguous laws. Garland v. Cargill continues the trend of rolling back Chevron, especially where criminal penalties are involved.
Majority vs. Dissent: What the Justices Said
| Opinion | Summary |
| Majority (Justice Thomas) | Bump stocks do not meet the statutory definition of machine guns; ATF exceeded its authority. |
| Concurrence (Justice Alito) | Congress could ban bump stocks, but ATF cannot do it alone. |
| Dissent (Justice Sotomayor) | Bump stocks effectively allow automatic fire; ATF’s interpretation was reasonable. |
What This Means for Gun Owners Nationwide
Federal Level
- The bump‑stock ban is vacated.
- Bump stocks are not machine guns under federal law.
- ATF cannot prosecute bump‑stock possession under the NFA.
State Level
Some states still ban bump stocks independently. Illinois is one of them. Under the Protect Illinois Communities Act (PICA), bump stocks remain prohibited statewide.
If you live in Illinois, this ruling does not change state law.
Why This Case Matters Beyond Bump Stocks
Garland v. Cargill is now a major administrative‑law precedent. It signals:
- Stricter limits on ATF rulemaking
- Greater scrutiny of agency reinterpretations
- A requirement that Congress—not regulators—define criminal conduct
For the firearms community, this means future ATF rules will face tougher judicial review, especially when they attempt to redefine long‑standing statutory terms.
Practical Guidance for Illinois Gun Owners
Even though the federal ban is gone, Illinois residents must still comply with state law. Here’s what you need to know:
- Do not purchase, possess, or transfer bump stocks in Illinois.
- Do not bring bump stocks into Illinois from another state.
- Do not rely on the federal ruling as a defense against Illinois charges.
If you travel out of state, bump‑stock legality varies widely. Always check local laws before transporting any firearm accessory.
For questions about Illinois compliance, FOID/CCL guidance, or safe‑storage best practices, C.O.P.S., Inc. is here to help.
The Bottom Line
Garland v. Cargill is a historic decision that reins in federal regulatory power and restores clarity to the definition of a machine gun. While it lifts the federal bump‑stock ban, Illinois residents must still follow state law, which continues to prohibit these devices.
This ruling is a reminder of why clear, consistent, and lawful regulation matters—and why responsible gun owners must stay informed.