If FOX would actually hold a debate I believe Trump would be there, however, they have already had 3 chances to host an adult debate and they failed miserable, 3 strikes and your out!
Well, it is Trump who cannot debate like a grownup. Who keeps interrupting people.
Who violated debate rules by making a phone call during the debate and then coming back with a lie about a Better Business review of Trump University which BB immediately disavowed.