[Roccus]

While your answer helps to clarify who has standing in a lawsuit, IMO it missed the point of my query. Some office or gov’t entity has to be RESPONSIBLE to ensure that these requirements are met.
When I applied for my SS retirement benefits, I was required to bring my birth certificate. This was to prove my age. The clerk that I presented the certificate to took a photocopy of it. Now, I'm sure that clerk could not determine the validity of that document (especially since it was from a different state) and that the photocopy was sent into the vast inner workings of the SS system where the bureaucracy checked its authenticity. It's what they do. It is their job. The SS laws give them the responsibility and the authority to verify my bona fides.
Who or what government entity has the responsibility and the authority to verify Obama’s bona fides pursuant to the Constitution?,
[using strange words to try and sound intelligent ;) ]

[Klepto]

Ah. I gotcha. I misunderstood. Sorry about that.

you know, one would think you are correct but, rather bluntly, I’ll be damned if I know who it is or even if it exists. It’s never been an issue and, prior to now, seems so basic and easy that I would suppose there is no oversight. If there is, it is likely on the state level when the parties petition to put their candidates names on the ballots. I would be astounded if there is anything nationally on the Fed level. Probably all state stuff and probably pretty pro forma, ie.e just make sure the correct boxes are checked.

[Non-Sequitur]

Some office or gov’t entity has to be RESPONSIBLE to ensure that these requirements are met.

It appears that there isn't.