WASHINGTON – Congressional Republicans have been champing at the bit to redo Dodd-Frank, but one part has been causing them fits: the swipe-fee reform, Bloomberg News reports. The banks want the fee limit removed for debit card transactions, while retailers want to keep the limits in place. The Durbin amendment capped the debit card transaction fee to around 24 cents. Goldman Sachs Group analysts estimated that the change cost the banks $9 billion in revenue.

With President Donald Trump calling for the financial rules to be decimated, things have heated up on this issue. “This is like choosing between children,” said Isaac Boltansky, a financial regulation analyst at Compass Point Research & Trading. “It's brutal for everyone involved.”

While Democrats and Republicans don’t agree on many issues these days, both parties view the swipe-fee problem as tricky. “This issue always makes me grumpy,” said Rep. Jim Himes (D-CT). “I'm being forced to choose between the competing interests of two big industries.”

The battle shows no signs of letting up anytime soon. Retailers have shelled out close to $359 million in lobbying efforts since 2010, with banks and financial firms spending around $248 million, according to OpenSecrets.org. “This is a top priority,” said Doug Kantor, a partner at the law firm Steptoe & Johnson, which represents NACS on this issue. “We're doing all of the things that you do when you want to lobby an issue hard.”

Meanwhile, on Monday, the U.S. Supreme Court refused to hear an appeal over the swipe-fee settlement, allowing the Second Circuit’s ruling that the settlement didn’t sufficiently protect the interests of some merchants to stand.