trump. when you look at him, do you see someone with the moral authority to unite the country? [crowd booing] >> former new york city mayor and former presidential candidate rudy giuliani joins us. good evening, sir. >> well, i went through 11 republican debates in 19 -- 2007, and 2008, and i got some really, you know, difficult questions like chris matthews asked me what's the difference between she a and sunni and i said to chris you want the historical difference or the ancient difference and then he backed off the question the minute he knew i knew the difference. i have never seen anything like that. that was totally out of control. those reporters should, i think they should just join the democratic national committee and stop being reporters. entire attack questions. silly, ridiculous, stupid things that are brought up. here we have -- this is supposed to be an economic debate. cnbc, the business channel.