Smith & Wesson Brands, Inc. v. Estados Unidos Mexicanos, Docket No. 23-1141
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Smith & Wesson Brands, Inc. v. Estados Unidos Mexicanos, Docket No. 23-1141
The Supreme Court had to decide just how far a federal law shields gun makers from lawsuits when their products end up in the wrong hands. That law, known as the Protection of Lawful Commerce in Arms Act, bars most claims against firearm manufacturers—unless a plaintiff can show the makers knowingly helped illegal dealers break the law.
On June 5th, Justice Elena Kagan wrote for a unanimous Court in Smith & Wesson Brands v. Estados Unidos Mexicanos. Mexico sued seven U.S. gun makers, saying they aided and abetted dealers who sold weapons to traffickers. But the justices found that the complaint didn’t show the manufacturers consciously joined any criminal scheme. Knowing a few dealers slipped guns across the border or choosing to market certain products, the Court said, falls short of the “helping hand” needed to open the door to a lawsuit under the law. With that requirement unmet, the Court ended the case. So Mexico’s challenge is off the table for now. What happens next—and whether other efforts can succeed—remains to be seen.
Supreme Court Blocks Mexico's Lawsuit Against U.S. Gun Manufacturers
The Government of Mexico filed a lawsuit in U.S. District Court against seven American firearms manufacturers under the Protection of Lawful Commerce in Arms Act (PLCAA). Mexico claimed that its widespread gun violence problem is fueled by weapons trafficked from the United States to Mexican drug cartels, and it sought to hold the manufacturers civilly liable for harms resulting from criminal misuse by these third parties.
Since the PLCAA generally shields gun manufacturers from lawsuits based on such downstream misuse, Mexico tried to use the law's "predicate exception," which allows lawsuits when a manufacturer knowingly violated a law related to the sale or marketing of firearms, and that violation directly caused harm. Mexico alleged that the manufacturers aided and abetted unlawful sales by: (1) continuing to supply dealers known to traffic guns to Mexico; (2) failing to implement distribution controls; and (3) designing and marketing weapons (like military-style rifles or models with Spanish names) intended to appeal to cartel members.
Opinion of the Court
Justice Kagan, writing for a unanimous Court, reversed the lower court's decision and ruled that Mexico's complaint did not convincingly allege the level of conscious, affirmative participation needed for aiding-and-abetting liability under federal law. The Court emphasized three key principles:
- Aiding and abetting typically requires involvement in a specific wrongful act, not just general industry practices, unless participation is "pervasive, systemic, and culpable."
- Liability usually requires affirmative actions rather than failures to act or omissions.
- Routine, generally legal business conduct that "incidentally" helps criminals doesn't qualify.
Mexico's allegations about industry-wide knowledge, passive distribution policies, or legal design and marketing choices showed mere "indifference" rather than the active joining of "mind and hand" required for aiding and abetting. Since no plausible violation was alleged, the PLCAA's protection remains in force and the lawsuit is barred.
Separate Opinions
• Justice Thomas (concurring): Highlighted that the PLCAA's requirement of a "violation" might itself require a prior finding of a statutory breach, so civil plaintiffs can't effectively determine criminal guilt without proper criminal-law protections.
• Justice Jackson (concurring): Emphasized that Mexico's complaint never identified any specific violation of a firearms statute; the PLCAA's exception requires actual statutory violations, not just questionable business practices.
How Gun Manufacturer Liability Shields Work Under Federal Law
The PLCAA was created to protect firearms manufacturers and sellers from being sued when their legally sold products are later misused by criminals. However, Congress included a narrow exception that allows lawsuits when a gun manufacturer knowingly breaks a law related to selling or marketing firearms, and that violation directly causes someone's injury.
Congress provided examples of what might qualify, such as falsifying transfer paperwork or knowingly selling to prohibited persons, but broadly tied the exception to "any" applicable statute. This reflects a careful legislative compromise: blocking lawsuits based on how criminals later use firearms, while still allowing claims when gun makers themselves break clear legal duties.
The Court's ruling clarifies that to overcome this immunity, plaintiffs must show that manufacturers actively participated in illegal activity with the specific intent to further crimes—not just that they conducted business in ways that might indirectly enable criminal activity.