There's a second option; provide evidence that Obama wasn't born in the U.S. and it makes the birth certificate irrelevant. That seems to be the tough part.
I have seen several copies of Obama’s birth announcement from 1961 Hawaii newspapers posted on line. I have also seen the posting of his mother’s enrollment at the University of Washington for the 1961 fall semester. She would have to be one tough mama to accomplish that. One thing that is possible is that Obama was born earlier that summer and brought into the United States when she returned. I don’t know what the status of a baby is, one or two months old, being brought into the United States by it’s American mother. The August birth announcement in Hawaii newspapers also would tend to discredit this possibility.
Asking the question should be enough.
The burden of proof is on him to show he is eligible. There has already been enough information provided casting doubt on his place of birth.
So, the logical thing is to prove he is legit.
You certainly don’t SEAL the document as he has in Hawaii.