Interesting—would you have any sources you could quote on that?
If so, it’s just one more example of how prescient and far-sighted the Founders were. Simply amazing.
In the context of Obama's situation -- whatever that may be, and there are very few certainties known about his birth -- the term "natural born" is definitely not settled law.
It wasn't until 1790 that they passed a law exempting their own children and children of other members of "the club"'s (e.g. children of diplomats stationed abroad) from the strict requirement of US soil birth.
Note that this is NOT a constitutional amendment.
The original Constitution is intact, and still the supreme law of the land.