(or rather, non-issue)
No matter what document he displays NOW, no matter what series of heavily-locked vaults he puts it in, no matter how the paper smells (even if you have C. Everett Koop himself sign on his medical honor that the carbon-date tests show that the certificate Obama shows is the self-same one that was printed as he lay in the manger of the Hawaiian stable) ...
SOMEBODY is going to claim that it's "forgery etc."
Why? Because Obama is SO wonderful, anarchists-etc. have NOTHING ELSE to tear him down for!