Faking something is very easy nowadays
So to complete this hoax we need to fake
1. A legal document
2. The seal of the state of Hawii
3. Doctors that delivered Obama
4. Official Medical records
All because someone a long time ago determined that Obama was going to be running for President in 2008. My god we are dealing with time travel. Quick someone get me James T. Kirk or Picard. Maybe it was Nero, he likes changing things.