H.R. 923

In plain English

Stop Arming Cartels Act of 2025 This bill expands the regulation of .50 caliber rifles under federal firearms laws and authorizes new civil remedies for certain violations. Firearms that are trafficked from the United States to Mexico are often routed to transnational criminal organizations (TCOs), including cartels. In recent years, TCOs increasingly use .50 caliber rifles in attacks on Mexican security forces. In 2025, in Smith & Wesson Brands, Inc. v. Estados Unidos Mexicanos , the U.S. Supreme Court held that the Protection of Lawful Commerce in Arms Act (PLCAA) bars a civil lawsuit by Mexico against U.S. firearms manufacturers and one U.S. firearms distributor for costs associated with gun violence in Mexico. (The PLCAA limits the civil liability of firearms manufacturers and sellers for damages resulting from the criminal or unlawful misuse of firearms.) This bill generally criminalizes the import, sale, manufacture, transfer, and possession of .50 caliber rifles under the Gun Control Act and subjects .50 caliber rifles to regulation (i.e., registration and licensing requirements) under the National Firearms Act. Additionally, the bill criminalizes the

Congressional Research Service summary from Congress.gov (not yet simplified).

Sponsor and status

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How South Carolina voted

No recorded roll-call vote on this bill yet. Most bills never get one.

Who lobbied

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No lobbying reported on this bill in the reports we have loaded (January 2025 through September 2026). Lobbyists report each quarter, about 20 days after it ends, so any lobbying since October 2026 will be added once those reports are filed.