Kamala Harris questions Trump’s stamina: ‘Is he fit to do the job?’  The Guardian USTrump hits back after Harris questions his energy level on campaign trail  CNNCiting report that Trump is ‘exhausted,’ Harris questions his fitness to serve  Detroit Free PressHarris questions Trump’s fitness for president over “exhaustion” and event cancellations  AxiosHarris asks if Trump is “fit to do the job,” highlighting questions about his health  CBS News