Two retailers in Florida want to represent a proposed class of merchants who they claim were subjected to the EMV chip fraud liability shift in violation of the Sherman Antitrust Act, California’s antitrust regulations, and other laws. B&R Supermarket (dba Milam’s Market) and Grove Liquors named Visa, MasterCard, American Express, Discover, Citibank, Capital One, Bank of America, Wells Fargo, Chase, PNC, EMVCo, JCB, U.S. Bancorp, USAA, UnionPay, and Barclays Bank Delaware as defendants in the complaint they filed in U.S. District Court for the Northern District of California. The co...