Bush, not missing a beat, said, "I'd say, Donald, I'll take you on one-on-one, in a debate. Any time. Any place."
Which of course begs the question - who would fair better in such a debate?
Bush tried to take on Marco Rubio during one of the presidential debates and it backfired badly. And the former Florida governor has not done much better with Trump.
Still, perhaps Bush would do better if was just him and Trump.
If nothing else, it would be entertaining.