Supporters say the recently approved tax law will help American multinationals compete more aggressively overseas. Others see incentives to put factories overseas.
The tax code has long offered rewards for buying rather than renting, an equation that has troubled some economists — and that the Republican bill upends.
On Thursday, Marco Rubio took a stand: He threatened to vote no unless House and Senate negotiators expanded the child tax credit.
Republican lawmakers have agreed to expand the child care tax credit so that it benefits more low-income Americans, a move intended to win back the support of Senator Marco Rubio of Florida.
Cutting taxes is mostly an exercise in slicing the economic pie a different way, not making it bigger, with gains for a few offset by losses for many.
The G.O.P. bills impose different rates on the same income based on things like organizational structure or occupation. At the losing end? Employees with paychecks.