Visa Subsidiary Cuts Ties with Nation's Largest Gun Shop: "Hyatt Gun Shop states that a subsidiary of Visa shut down payments for its customers' online gun purchases, effectively cutting ties with "the nation's largest gun store," Hyatt claims, because of legal online gun sales. Hyatt Gun Shop is located in Charlotte, NC, and owner Larry Hyatt says Authorize.net—described on its website as "a solution of Cybersource, a wholly owned subsidiary of Visa"—sent him an email saying they were ending their business relationship with his store over "the sale of firearms or any similar product.""