Arizona Senator John McCain is expected to miss a big vote on the Republican tax plan. The 81-year-old returned to Arizona after spending several days in a Maryland hospital recovering from treatment for brain cancer.
It's unclear when McCain might return to Washington, DC. Despite McCain's trip to Arizona, the GOP believes it has enough Senate votes to pass the tax measure.
Senators Bob Corker and Marco Rubio both announced they'll vote yes for the tax bill, possibly as soon as Tuesday.