Smith doesn't claim the birth certificate was obtained legally, in fact he says in order to get it he had to pay a "cash consideration" (bribe) - perhaps he was punked.
“perhaps he was punked.”
I kind of, think that he was taken for a ride or punked so to speak! The question therefore is why does he continue to pass the document as real. What was his intent when he took videos with the backgound of a slum area purporting them to be from Kenya. The question remains that he has not shown any proof that he went to kenya...bus ticket, railway ticket, plane ticket, gas and meal receipt, hotel accomodation receipt, pictures (especially that he used pictures to show that he was in Kenya...the pictures turned out to be taken from the Dominican Republic).