Supreme Court Dismisses Mexico’s Lawsuit Against U.S. Gun Manufacturers
Texas Attorney General Paxton Applauds Unanimous Ruling in Defense of Second Amendment
WASHINGTON, D.C. — In a unanimous decision issued June 3, 2025, the U.S. Supreme Court dismissed a lawsuit filed by the government of Mexico against several American firearms manufacturers. The ruling marks a major legal victory for the U.S. gun industry and was supported by a coalition of 27 state attorneys general, including Texas Attorney General Ken Paxton.
The lawsuit, originally filed in August 2021, alleged that American companies including Smith & Wesson, Glock, Colt, Beretta, and Interstate Arms bore responsibility for the rampant gun violence in Mexico, claiming their products were knowingly trafficked across the border and used by criminal cartels. Mexico sought more than $10 billion in damages, arguing that the manufacturers’ marketing and distribution practices fueled violence and instability in the country.
Attorney General Paxton and the multistate coalition pushed back against the claim through an amicus curiae brief, asserting that the suit threatened U.S. sovereignty and constitutional rights—specifically the Second Amendment. The Court ultimately agreed, ruling that U.S. gunmakers cannot be held accountable in American courts for crimes committed by foreign actors abroad.
“Mexico cannot blame American firearms companies for its ongoing internal war against the cartels, and in no way can a foreign nation be allowed to undermine our Second Amendment rights,” said Paxton following the ruling. “I proudly supported our firearms manufacturers against Mexico’s baseless assault on our liberties and am pleased the Supreme Court unanimously sided with common sense, the rule of law, and America.”
Legal Background
Mexico’s lawsuit contended that the gunmakers’ alleged negligence enabled the flow of tens of thousands of weapons into the hands of drug cartels, contributing to thousands of deaths and billions in economic losses. The case sought to compel stricter controls on the sale and export of firearms manufactured in the United States.
However, the attorneys general opposing the suit argued that Mexico lacked standing under U.S. law and that the claims were precluded by the Protection of Lawful Commerce in Arms Act (PLCAA). Enacted in 2005, the PLCAA provides legal immunity to gun manufacturers and dealers when their products are misused in criminal activities, provided they were lawfully sold.
“If Mexico wants to end its domestic gun problem, it may do so,” the amicus brief stated. “It could name and report the gun dealers who allegedly sell guns to drug cartels. It could attempt to negotiate with the United States to extradite individuals who trafficked guns to Mexico. It could finish its war with the cartels. It could even close its border with the United States. But it cannot end the domestic manufacturing of American firearms. Nor can it impose its policy preferences on the United States by judicial fiat.”
Supreme Court’s Ruling
The justices unanimously held that Mexico’s attempt to use the U.S. legal system to influence domestic firearms manufacturing policy and liability standards was improper. The Court emphasized that allowing such a lawsuit could create a precedent for foreign governments to intervene in domestic commerce and constitutional matters.
The decision also reaffirmed the scope of the PLCAA, stating that American gunmakers cannot be held civilly liable for third-party criminal misuse of their products in another country.
To read the Supreme Court’s full opinion, [click here].
To read the multistate amicus brief, [click here].
Broader Implications
While the ruling concludes this particular legal battle, Mexico has indicated it will continue to pursue alternative avenues to reduce gun trafficking—potentially through diplomatic, international legal, or trade-related channels. Mexican officials maintain that the unchecked flow of firearms from the U.S. plays a central role in fueling cartel violence.
Meanwhile, U.S. gun manufacturers and conservative legal advocates view the ruling as a reaffirmation of constitutional protections and an important check on international overreach into American policy.
As tensions persist over the role of U.S.-origin firearms in international crime, the case underscores the ongoing complexities of cross-border enforcement, arms trafficking, and the limits of legal accountability in a globalized world.
