There's zero chance his handlers will let him debate anyone, let alone Biden. I'm not saying Biden is fantastic or anything, it's just that Trump is unable to string coherent thoughts together anymore. It's never been his forté, but these days? Sheesh. Dude's not making any sense at all and can barely read from the teleprompter. Intelligently coming up with retorts on the fly in a debate? I doubt he'll even understand why Obama's suddenly an elderly white guy.