The Senate approved the final tax reform plan 51-48 early Wednesday, the second-to-last obstacle before sending it to President Trump for his signature.
The Senate tax proposal released Thursday would cap the mortgage interest deduction for properties worth $1 million, a reversal from the House plan that would have limited the deduction to $500,000.
Bank lobbyists are increasingly worried that the Senate Republicans may go further than the House in taxing large financial institutions as part of their reform push.