American Express Must Tell Merchants They Can Openly Favor Competing Cards, And Soon
[UPDATE, Dec. 22, 2016: The U.S. Department of Justice last month filed a petition for a rehearing. It said the appeals court’s reversal relied on “the mistaken belief that [antitrust] principles cannot properly account for the interdependence” of the two sides of Amex’s platform, merchants and cardholders. Several parties have since filed amicus briefs.] [UPDATE,…