Tillis was one of only two Senate Republicans, along with Rand Paul, Ky., who voted against a motion to start debate on Republicans' massive tax and spending bill.

Republican Sen. Thom Tillis of North Carolina said Sunday he will not seek reelection next year, an abrupt announcement that came one day after he staked out his opposition to President Donald Trump’s tax breaks and spending cuts package because of its reductions to health care programs.