This bill would prohibit credit card networks and payment processors from using or requiring merchant category codes that specifically identify firearms retailers. This means businesses selling firearms, ammunition, and related products could not be set apart from general or sporting goods stores in payment systems. The U.S. Attorney General (AG) would enforce the law, handle complaints, and require corrective action if violations occur. It also overrides any state or local laws that mandate firearm-specific codes, but still allows codes for fraud prevention and security. Each year, the Attorney General must report to Congress on the law’s effectiveness.