Protecting Privacy in Purchases Act

S 4075, the Protecting Privacy in Purchases Act, prohibits payment card networks (like Visa or Mastercard) and covered entities (such as banks or processors) from using or requiring special merchant category codes that distinguish firearms retailers from general stores. This directly affects firearms retailers (businesses selling guns or ammunition) and payment networks by preventing them from assigning codes that could flag gun purchases for tracking. The bill requires the Attorney General to investigate complaints about violations and enforce the ban, with potential court action if violations aren't fixed within 30 days. It also preempts state or local laws on this issue and mandates annual reports on enforcement efforts.