Updated at 4:30 p.m. ET
A leading Republican senator told reporters on Thursday that President Trump "has not yet been able to demonstrate the stability, nor some of the competence that he needs to demonstrate in order to be successful."
Tennessee Sen. Bob Corker was at the Rotary Club of Chattanooga and spoke to local reporters there. In video posted by Chloe Morrison of Nooga.com, Corker added, "And we need for him to be successful. Our nation needs for him to be successful."