We were listening to Mark Levin tonight when Cruz called in and made the challenge to Trump. As the discussion went on, Mark Levin agreed, but said he wouldn't be moderator as some would say he was biased. He would be there to take care of the commercial breaks, but that was all. It will be interesting, but I bet Trump won't oblige...good that Cruz is showing he isn't afraid to go on the show and debate Trump.
http://www.realclearpolitics.com/video/2016/01/26/ted_cruz_challenges_donald_trump_to_one-on-one_debate_moderated_by_mark_levin.html