UPDATE 2-U.S. Supreme Court backs American Express in merchant fee dispute
June 25, 2018 at 11:10 AM EDT
WASHINGTON, June 25 (Reuters) - The U.S. Supreme Court on Monday sided with American Express Co and against 11 states, ruling that the company's policy of forbidding merchants from encouraging customers to use rival credit cards with lower fees does not violate federal antitrust law.