Kroger threatens to ban Visa cards

Kroger, the biggest supermarket chain in the U.S., is threatening to bar the use of Visa cards in a dispute over the "swipe" fees it pays to handle customers' credit and debit card transactions. In a shot across the financial giant's bow, a California' subsidiary of the grocery chain, Foods Co., said that starting in August it will stop accepting Visa credit cards at its 21 stores in the state. That will save on the costs associated with Visa's interchange rates and network fees, according to Fo