PHOENIX - Maricopa County Sheriff Joe Arpaio promised major revelations Tuesday when he unveiled what he is calling new findings on President Barack Obama's birth certificate.
Arpaio said the continuing investigation deepens his concern the birth certificate is a forgery.
Cold Case Posse Investigator Mike Zullo said he believed the document had been tampered with by human intervention.
He said their analysis is finished and that they can prove the document has been manipulated.
"It's time for this charade to stop," Zullo said.
Zullo said he believes several numbers on the birth certificate have been manipulated.
"We believe the document has been tampered with in order to get it to what it does is with blatant human intervention," said Zullo. "You couldn't bring it into the courtroom and convince a judge that it's authentic."
After the investigation, Zullo said the U.S. would have to question the citizenship of anyone with a birth certificate from Hawaii.
"We have worked hard at this, we wanted to clear the President of the United States, but it hasn't happened like that," Arpaio said.
Arpaio added he wanted the U.S. Congress to look into the matter.
The last news conference Arpaio held on this matter was in March.
Arpaio said he believes President Obama's birth certificate released last year is a "computer-generated forgery."
He said he's not questioning Obama's involvement in the alleged forgery or his legal status but believes a crime occurred.
Hawaii officials have repeatedly confirmed Obama's citizenship, and state officials did again Tuesday.
"President Obama was born in Honolulu and his birth certificate is valid," Joshua A. Wisch, a special assistant to Hawaii's attorney general, said in a statement. "Regarding the latest allegations from a sheriff in Arizona, they are untrue, misinformed, and misconstrue Hawaii law."
Wisch also said that "not only are Hawaii's vital records some of the best managed, but they also have some of the strongest restrictions on access to prevent identity theft and fraud."
Arpaio said he has an obligation to do his job and that citizens have asked him to look into the matter.
Questions about Obama's birth certificate have been raised for years, leading to the idea that Obama was born outside the U.S. and is ineligible to be president. The White House denied the allegations and released the President's certificate of live birth from Hawaii last year.
Arpaio said his Cold Case Posse is made of volunteers and, in the past, said the investigation would not cost taxpayers.
It was recently discovered that an MCSO deputy was sent to Hawaii to investigate and taxpayers would be responsible for the bill. The trip cost $9,600 . The majority of that cost went to the deputy's salary, benefits, and overtime which would have been incurred regardless of the trip.
However, more than $3,000 were spent on airfare, lodging, and meals. The Sheriff's office says Arpaio supporters tried to pay for it but the county commission declined the offer.
There's also an issue over travel policy that may have been broken. The county manager did not sign off on this trip outside of the continental U.S.