Jeff Flake. Bob Corker. Mitt Romney. And now, Sen. Thom Tillis of North Carolina. The roll call of Republican senators who have called it quits rather than endure a political career sideways with President Donald Trump is long and apparently,

Senate Majority Leader John Thune said Tillis gave him a heads-up he would retire: “It’s unfortunate, and it’s something he’s been thinking about for a while and he just finally decided that was the best decision for him and his family,” he told POLITICO.

Trump on Saturday lashed out at Tillis, warning that he was making a “BIG MISTAKE” and calling him “a talker and complainer, NOT A DOER!” He celebrated the news of his retirement on Sunday night, but has not yet reacted publicly to the senator’s speech.