"I think the things that are happening right now that are harmful to our nation, whether it's the breaking down of . . . relationships we have around the world that have been useful to our nation," he said. "But I think at the end of the day, when his term is over, I think the debasing of our nation, the constant non-truth telling, just the name-calling ... I think the debasement of our nation will be what he'll be remembered most for, and that's regretful.""Debasement of our nation." That sums it up perfectly.
UPDATE: NY Times. "Mr. Corker, who supported Mr. Trump in the 2016 presidential election, told CNN on Tuesday that he would not do that again."