Florida Republican Sen. Marco Rubio will not vote for the GOP tax bill unless the final version includes a larger expansion of a child tax credit, according to The Washington Post.
Rubio and Utah Republican Sen. Mike Lee had pushed a proposal that would have expanded the tax credit as part of the overall bill, but could not convince their colleagues to support the move. They want to allow families to claim the credit if they do not earn enough to pay income taxes but do incur payroll taxes. The Post notes that the expansion would cost $80 billion over ten years.
Both Lee and Rubio voted to send the tax bill to a conference committee that is set to release the final version of the bill at the end of the week. Sen. Bob Corker, R-Tenn., was the only Republican who voted against sending the bill to conference, due to concerns about the bill's effect on the deficit.
Republicans hold a 52-48 advantage over Democrats in the Senate and can only afford to lose two votes on the tax bill. If that happens, Vice President Mike Pence can be brought in to vote and break a 50-50 tie.