Not sure what that would accomplish, unless you buy into the Republiclowns' senility narrative.Biden should not debate Trump. Or, say, "When your 91 criminal indictments are settled, then we can talk."
I'll admit I was a little concerned prior to the last SOTU speech, but Biden killed it.
After that, I believe that on pure substance, and if the moderators don't allow Trump to butt in and try to walk all over Biden while he's trying to speak, Biden will mop the floor with that weird thing on top of Trump's head.