I suspect that he has an original Hawaiian birth certificate; that the BC lists his religion as Muslim, or his race as Arab, or even just his name as Barry; that his campaign faked the BC that was posted on the internet to conceal something of the sort listed above; and that they now can not allow the fact that they posted a fake certificate of live birth to be proved in public.
Just my opinion...
I heard it was because his REAL birth certificate had a DIFFERENT father than the Kenyan one...a guy like Malcomb X or Louis Farrakhan!