Biden, as everyone knows, has a stutter

[gratuitous]

He's worked on it his whole life, but it's still there. Trump, on the other hand, has no physical imfirmities (except for bone spurs in one of his heels, nobody knows which) and yet he regularly short-circuits in front of a microphone. Slagging on Biden seems like a poor strategy if Trump is seeking the votes of decent people, but I won't interrupt him while he's making a mistake.