AmEx Targets Biggest Banks, Ducks Debit Swipe-Fee Caps Wit

AmEx Targets Biggest Banks, Ducks Debit Swipe-Fee Caps Wit

Sarah Martone/Bloomberg

AmEx's new card may force Green Dot Corp. (GDOT) and NetSpend Holdings Inc. (NTSP), the biggest U.S. prepaid processors, to cut fees, said Mike Taiano, an analyst with Sandler O'Neill & Partners.