NEW YORK--(BUSINESS WIRE)--American Express (NYSE:AXP) and the Seattle Seahawks today announced a multi-year partnership to bring excitement and value to passionate Seahawks fans – also known as the “12s.” With strong relationships with both Card Members and merchants and a legacy of working with sports partners, American Express will work with the Seahawks and select merchants to amplify the fandom around one of the best-supported teams in professional sports. Card Members and fans will be giv