Top U.S. regulators said Thursday that small banks could be hurt by new limits on debit-card fees, comments that could fuel efforts to delay or change a provision in the Dodd-Frank financial-overhaul law.

The provision directs the Federal Reserve to cap “swipe fees” that debit-card issuers charge merchants each time a customer pays with a debit card. Banks and credit unions with less than $10 billion in assets, however, are exempted from the limit and can charge higher fees. Get the full story »