Irrelevant.
It's one thing to have a check disavowed by its issuer. In that case, analysis of the signature by experts might be relevant.
But there is no point in analyzing the validity of the document Obama produced. It either came from the State of Hawaii, or it didn't. There is no point in forging it, because the State would just deny ever issuing it or point out it has somehow been altered and does not match the vital records in their files.
These document quacks are just a big joke.