Personally, I never believed that Obama was not born in the US. I did wonder, though what concerned me was his overblown hesitancy to release his actual birth certificate. When Hawaii finally released it, that exacerbated the hinky feelings over the question of what he could have possibly been trying to hide.
It seems like these folks sense some shenanigans in the release, not necessarily that Obama was not born in America.
Anyway, rather than calling these folks "birthers," it may be more appropriate to call them "certificaters."
I still wonder what Obama was hiding. They likely will find no real difference between the document on file and the one released. (They may well find some trivial differences caused by reproduction and choose to read nefarious intent into those differences.) But, still, I am curious to see what they turn up.
We should expect the openness and honesty from a president that a "Knock yourself out, guys," would demonstrate. That attitude is something Obama lacks and is, IMO, the real concern in this affair.