The Donald Trump debate is quickly turning into a small, intimate chat. Mitt Romney is the latest candidate to decline his invitation, saying he’ll be too busy campaigning. "No, I'm not participating in that," Romney said in an interview on Fox News. "The rest of the month is going to be spent campaigning.” Jon Huntsman and Ron Paul were less diplomatic with their rejections. Paul’s spokesperson said the idea of Trump hosting a debate was “wildly inappropriate” and “flies in the face of that office’s history and dignity.” So far the only candidates to accept are Rick Santorum and Newt Gingrich.