Florida Republican Sen. Marco Rubio informed Senate leaders that he would vote against the Republicans' $1.5 trillion tax plan unless it includes the child tax credit provision he has been advocating for, a Senate GOP source told the Washington Post.
Why it matters: Republicans can afford to only lose two votes to pass it through the Senate. Bob Corker, who voted no on the Senate bill, said he'll consider the conference's final version. Rubio turning on the bill would mean Vice President Pence would be needed to break the tie.
Editor's Note: This post has been updated to reflect Corker's statement on the conference version of this bill.