Flake. Corker. Romney. And now, Sen. Thom Tillis. The roll call of Republican senators in the U.S. Congress who have called it quits, rather than endure a political career sideways with President Donald Trump,

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.