In a letter dated Tuesday (May 13) and addressed to the commission's antitrust chief, financial services commissioner and economy chief, the associations also called for price controls on interchange fees, transparency and non-discriminatory obligations for International Card Schemes (ICSs), and a tool for regulators to scrutinize ICSs' actions, Reuters reported Wednesday (May 14), citing a copy of the letter. "International Card Schemes (ICS) have been able to increase their fees without competitive challe ...