evidence: JOE BIDEN, PRESIDENT OF THE UNITED STATES: Well, let me say this clearly as I can -- I'm staying in the race. I'll beat Donald Trump. I will beat him again in 2020. TAPPER: Your ears did not deceive you there. That's President Biden trying to assure folks concerned about his cognitive skills by saying that he's going to beat Donald Trump and win in 2020. 2020. [...] JOE BIDEN, PRESIDENT OF THE UNITED STATES: Stronger supply chains, stronger economy, stronger military, and a stronger nation.