Republican Sen. John McCain is heading back to Arizona for the holidays and will miss the final vote on the GOP tax bill this week, CBS News reports. McCain, who is several months into treatment for brain cancer, was released from a Maryland hospital this weekend after recovering from the side effects of chemotherapy. It was not immediately clear when he would be returning to Washington. Republican lawmakers appeared to secure the number of votes necessary to pass the bill on Friday, with Senators Bob Corker and Marco Rubio saying they’d support the latest version of the legislation after earlier expressing reluctance. While McCain’s vote would likely not be the determining factor, he was one of only three Republican senators to vote against a GOP effort to repeal the Affordable Care Act in July. The tax bill, the most comprehensive overhaul of the U.S. tax system in years, would mark a massive legislative victory for President Trump, but critics say it favors the wealthy.