Trump can’t talk to him. If he does, a hundred copycats will follow suit. All sympathy if he is psychotic but Trump needs to ignore.
I bet if he wanted to talk to Biden, Biden would come out of his basement, get on a fast plane to Chicago, get on a bullhorn, and play act talking the guy down.
Then Biden can claim the "suburban vote", with the MSM blasting 24/7 that DT is "irresponsible" and "cold and callous" for not helping a man dangling from Trump's own building.