AmEx CEO Gets Second Jolt in Week.

The article reports that U.S. District Judge Nicholas Garaufisa ruled in favor of the U.S. Justice Department in its antitrust suit alleging financial company American Express Co. (Amex) engaged in anticompetitive behavior by refusing to let merchants that honor its credit cards promote cards from other issuers including Visa Inc. and MasterCard Inc. Additional information is presented about the history of Justice's case against Amex, and the potential impact of the ruling on its business.