From The Truth About Guns:

The industry defendants in Estados Unidos Mexicanos v. Smith & Wesson Brands, Inc., et al., have asked the Supreme Court to consider two questions – whether the lawful production and sale of firearms in the United States is the “proximate cause” of alleged injuries to the Mexican government stemming from cartel-driven violence and if that also amounts to “aiding and abetting” illegal firearms trafficking because Mexico alleges these manufacturers know their products are unlawfully trafficked.