that's part of who trump is. i don't see what the purpose is of persisting with the birther stuff at this point for him even with his base. he's got his base. >> there are a lot of public officials and public figures who spent their life covering a story that isn't true. they just don't want their friends and family to know they were bs'ing the whole time. >> at some point -- >> he could have done it last night. he could have said i think he's legitimate. that's all he had so say. >> he didn't. >> jeb bush attacked trump with new found energy. i think this was pre-fab. somebody fed him the lands but it was trump who landed the biggest blow. >> this is a tough business to run for president.