Where here ya go ... here is what he has to say about foreign policy, spending, jobs etc. Watch Vieira's face and how The Donald handles her.
But the question has more to do with how Trump presents himself, should he become an actual candidate: is he the candidate of Obama's birth certificate? No, he can't be if he wants to be taken seriously.
As dfwgator noted, it's a foot in the door; but it can't be all that he does.