[Godebert]

"As for the theory that jus sanguinis citizenship is required for someone to be a natural-born citizen, I respectfully disagree. Congress by law provides for who is a U.S. citizen at birth, and is someone is a U.S. citizen at birth pursuant to the U.S. law in effect at the time such person was born, then that person is a natural-born citizen."

Then why did the Founding Fathers change the original language describing qualification to be president from "born a Citizen" to "natural born Citizen"?

[AuH2ORepublican]

There were many, many stylistic changes made to the Constitution; not all changes were substantive.