during the general election. he's had a very public breakup with donald trump. >> the president has not yet -- has not yet been able to demonstrate the stability nor some of the competence that he needs to demonstrate in order to be successful. >> during a time these last few months when profiles in courage have been rare, even though i know you said on the air this year that he had the truth serum of not running for re-election, i think we would still list bob corker, as i always call him a workhorse and not a show horse in the senate, as one of those profiles, perhaps. >> it's a shame the white house has become an adult day care center. someone obviously missed their shift this morning. this was not the first time corker expressed grave concerns about the president's conduct.