Former Vice President Biden told CNN that voters should look at how Trump struggles to move in comparison to him.
Trump tried to claim that Joe Biden lacks the energy to be president, while questions are growing about his own health.
Reporters asked Trump if he had finished his annual physical, which is now in its second year, and the president responded by walking away.
The White House will say nothing, but there remain lingering and growing questions about Trump's health 3 weeks after his surprise visit to Walter Reed.
The visit to Walter Reed Hospital by Trump on Saturday did not follow the routine or protocol for VIP visits for regular physicals.
Trump has gone beyond keeping his health a secret. Everything that he has told the American people about his health is a lie.
NBC’s Heidi Przybyla and Steve Kornacki summed up how little we know about Trump’s health:
For the fourth time this week, Donald Trump has canceled a planned campaign event. The campaign event that was scheduled for the competitive battleground state of Arizona was canceled and replaced with nothing but thin air.