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It's a certified copy issued by the State Registrar. Do we need any more proof of what we've known all along? The only reason the certificate looks different is that this particular copy was printed a few days ago!
No matter what they release, there are people who won't believe it. They could invent a time machine and send Sarah Palin back in time to witness Obama's birth and they still wouldn't believe her if she told them. It's not about the truth, it's about keeping anyone who isn't a white conservative out of the White House using whatever remotely possible arguments are available.