Steve,
As I posted. I would really like to see a citation in the Constitution where public servants need to give their birth certificates to the press.
As you posted, there ain't one.
As to who needs to see it? The individual state board of elections certifies all candidates. So if a candidate is running for POTUS and happens to be a resident of Maine, it is the responsibility of the Maine state board of elections to properly certify that the candidate is eligible for office.