Earlier Thursday, four people familiar with the discussions told POLITICO that Marshall was threatening to throw up hurdles in a bid to attach an amendment to the NDAA that would force the major payment networks to compete on the swipe fees that merchants pay in exchange for accepting credit cards.

Marshall, along with Sen. Dick Durbin (D-Ill.), reintroduced a bill targeting credit card payment networks last month — sparking a lobbying battle between Wall Street banks and retailers. Marshall and Durbin filed related amendments on the NDAA earlier this month.

“Folks living paycheck to paycheck and small businesses back home deserve relief. We have a bipartisan bill, now a potential amendment, which provides that and should be considered,” Marshall said. “In the face of spending nearly $900B on the military, perhaps we can give some much-needed relief to hard-working Americans and seniors on fixed incomes.”