[Business Wire] – Effective June 1, 2015, American Express is enhancing its Premier Rewards Gold Card, adding more value with 2x Membership Rewards points for purchases at U.S. restaurants, a $100 airline fee . . . → Read More: Market Update (NYSE:AXP): American Express Adds New Benefits to Premier Rewards Gold Card Similar Articles: Stock Update (NYSE:AXP): American Express card rules violated U.S. antitrust law – judge Company Update (NYSE:AXP): American Express: Charging ahead on diversity Company Update (NYSE:AXP): American Express Appoints Neal Sample President, Enterprise Growth