Smith & Wesson Brands, Inc. v. Estados Unidos Mexicanos

Facts of the Case

Provided by Oyez

The Mexican government sued several U.S. gun manufacturers in federal court, alleging their practices facilitated illegal gun trafficking to Mexican drug cartels, causing harm to Mexico. The defendants moved to dismiss, arguing the lawsuit was barred by the Protection of Lawful Commerce in Arms Act (PLCAA), which prohibits certain lawsuits against gun manufacturers. The district court dismissed the case, holding that the PLCAA applied and barred Mexico's claims. Mexico appealed.

The U.S. Court of Appeals for the First Circuit reversed, holding that while the PLCAA does apply to lawsuits by foreign governments for harm suffered abroad, Mexico’s lawsuit falls within the statute’s “predicate exception” for claims alleging knowing violations of laws applicable to gun sales. The court found Mexico adequately alleged that the defendants aided and abetted illegal gun trafficking in violation of U.S. laws, and that this proximately caused harm to Mexico. The court rejected the defendants’ arguments that the causal chain was too attenuated, finding Mexico plausibly alleged direct harm from having to combat well-armed cartels. The court remanded the case for further proceedings, allowing Mexico's lawsuit to move forward.

Questions

Can U.S. gun manufacturers be held liable for violence in Mexico under theories of proximate causation and aiding and abetting, based on their domestic production and sale of firearms that are later trafficked to Mexican cartels?

Conclusions

Because Mexico’s complaint does not plausibly allege that the defendant gun manufacturers aided and abetted gun dealers’ unlawful sales of firearms to Mexican traffickers, the Protection of Lawful Commerce in Arms Act (PLCAA), 15 U.S.C. § 7901(a)(3), bars the lawsuit. Justice Elena Kagan authored the unanimous opinion of the Court.

PLCAA broadly protects gun manufacturers and sellers from lawsuits arising from crimes committed with their products. However, it allows lawsuits to proceed under the “predicate exception” if the defendant knowingly violated a relevant law and that violation caused the claimed harm. A plaintiff can invoke this exception by alleging that the manufacturer aided and abetted a violation of federal gun laws. Under federal aiding and abetting law, a defendant must have taken specific action intending to help commit the illegal act. Mere knowledge of wrongdoing is not enough—there must be intentional participation in the crime, not just passive failure to prevent it.

Mexico’s claims against seven U.S. gun manufacturers centered on allegations that they enabled arms trafficking to Mexican cartels through negligent sales practices, poor distribution controls, and marketing choices. But the Court held that Mexico failed to plausibly allege the kind of affirmative, intentional assistance required for aiding and abetting. The manufacturers do not directly sell to dealers, and Mexico did not name specific dealers or transactions. Instead, the allegations amounted to indifference or failure to take preventative steps, which is not aiding and abetting under the law. Accepting Mexico’s theory would undermine PLCAA’s core protection of manufacturers from liability for third-party criminal misuse.

Justice Clarence Thomas wrote a concurring opinion suggesting that in future cases, courts should consider whether allegations alone are sufficient under the predicate exception or whether a prior adjudication of legal violation is required.

Justice Ketanji Brown Jackson wrote a concurring opinion stating that Mexico’s failure to identify any statutory violations is fatal to its claim, and allowing such lawsuits would contradict Congress’s intent to preserve legislative—not judicial—control over gun regulation.