Thom Tillis (R-N.C.) has never been shy about speaking his mind — and the past few weeks have given him plenty to talk about. He’s spoken out about President Trump’s rhetoric on Greenland, the investigation into Federal Reserve Chair Jerome Powell,

For the 65-year-old Tillis, who has won elections in one of the most politically competitive states, the approach is notable for the way in which he's pushing back against the White House. He's hardly staking out a position as a never-Trumper and repeatedly — often effusively — expresses support for the president.

U.S. Sen. Thom Tillis, the North Carolina Republican who cochairs the bipartisan NATO Observer Group, took to the Senate floor Jan. 7 to deride Miller's comments as "amateur hour" and declared he is " sick of stupid ."

Senate Republicans are vowing to block any effort by President Trump to seize Greenland by military force, as Trump officials on Wednesday refused to back off their demands to control the island