[Responsibility2nd]

I read and reread this link you provided. I searched for any references at all about eligibility. There are none.

Especially references related to Natural Born Citizen.

There is however his admission the election process is not perfect.... 

I venture somewhat further, and hesitate not to affirm, that if the manner of it be not perfect, it is at least excellent. It unites in an eminent degree all the advantages, the union of which was to be wished for.

[Political Junkie Too]

I read and reread this link you provided.

You must not have read the 5th paragraph about foreign powers gaining improper ascendent in our councils. You must not have gleaned the meaning of guarding against the danger of creatures of foreign powers raising to the position of chief magistrate of the Union. You must have missed the part about how the convention guarded against all dangers of this sort.

Either that, or you're just a very pedantic thinker.

-PJ