I'll call the guy "President" when he produces a real birth certificate proving he is constitutionally eligible to hold the office. It's not too much to ask, but he sure has poured a lot of resources and energy into not answering.
Until then, he's just a half-white half-black jug-eared commie shyster with no factual history and no reason to be in our office of the President of the United States.
I respect the Office too much to blindly offer respect to this fraud.