The President of the USA has released his 'long form' birth certificate in a final attempt to prove to hardline sceptics that he is indeed a natural born US citizen and therefore eligible to be President of the Union.
http://www.bbc.co.uk/news/world-us-canada-13212230
Personally I think he's wasting his time. The worst thing you can do to a conspiracy theorist is show them the proof that they're wrong. The proof simply becomes further evidence of a cover-up and reinforces the theory.