Why has the president himself not demanded they put out the original documents?

Matthews talked about putting the birth certificate controversy surrounding President Obama to rest:
“Why has the president himself not demanded they put out the original documents?” Matthews wonders.
“If it exists, why not put it out?” Chris Matthews asks.

http://www.realclearpolitics.com/video/2010/12/27/chris_matthews_why_doesnt_obama_just_release_the_birth_certificate.html