He's refused to do so.
What is Obama hiding?
Yes, I know he's posted images of his birth certificate to his website, and factcheck.org has posted one as well. There's only one problem: they're different. (Something else I wasn't aware of: factcheck.org is owned and run by the same Chicago organization that Obama served as a director for years. Can you say "conflict of interest"?)
Squelching this one would be ridiculously simple. Why is Obama refusing to do so?
Watch the video for yourself and see what you think.