text: UPDATE 4-Court #39;s cards ruling to aid MBNA, American Express The Supreme Court on Monday let stand a ruling that the Visa and MasterCard credit card associations violated US antitrust law by barring 
inputs: UPDATE 4-Court #39;s cards ruling to aid MBNA, American Express The Supreme Court on Monday let stand a ruling that the Visa and MasterCard credit card associations violated US antitrust law by barring 