The Durbin amendment is terrible for consumers though. If banks that issue debit cards can't make their money on interchange fees, then it will be harder and mo

The Durbin amendment is terrible for consumers though. If banks that issue debit cards can't make their money on interchange fees, then it will be harder and more expensive for consumers to have debit cards. If fewer people have debit cards, then this is ultimately not a net win for merchants. Short version: price controls are still bad economics.