> This suggests that there are state level regulations that may not align nationally to me I know at one point at least some of it was by-state. IIRC at least

> This suggests that there are state level regulations that may not align nationally to me I know at one point at least some of it was by-state. IIRC at least one retail place I worked at would not take a certain card (it was either discover or amex) because the merchant agreement would not allow us to offer a cash discount.