There can be one one logical reason. Obama is a fraud.
If the statement by the Hawaiian doctor had been sooner (and a bit more specific) I believe most would have given Obama a pass who are vocally doubting him today.
I think we are watching the first successful counter-Alinsky maneuver unfold, while Orly Taitz has been as single minded and hard headed as a woodpecker, and it is beautiful. Hammer, hammer, hammer in the question until the wood splits.