National Retail Federation and other groups attacked the amount of debit card interchange allowed.
Retail trade associations and firms call the Fed's debit interchange rule an issue of staggering importance.
A new Aité Group report says cash is more expensive for retailers than cards. Retailer groups disagree.
E-commerce merchant Mitch Goldstone filed the interchange antitrust lawsuit back in 2005.
Retailers displeased with U.S. District Court Judge John Gleeson's adjudicated settlement of litigation surrounding credit card interchange appealed his decision last week.
Some retailers appeal a settlement other retailers had reached with Visa, MasterCard and six major banks.
Credit unions wondering if the courts would make them change their debit card programs can rest easy for now.
Retail federation says without PINs, chip cards make little sense. Visa and MasterCard disagree.
Data collected by CUNA and the Consumer Bankers Association covers only the cost of card replacement.
Credit union trade associations turn down an offer to join bankers and retailers in a pledge to collaborate on data security.