Maricopa County Sheriff said in March that there was probable cause that Obama's long-form birth certificate, was a computer-generated forgery. Now... investigators are positive it's fraudulent... numeric codes on certain parts of the birth certificate indicate that those parts weren't filled out, yet (the) sections were completed... Investigators previously didn't know the meaning of codes but they were explained by a 95-year-old former state worker who signed the president's birth certificate. The Obama campaign declined to comment