And what, exactly, was the "original intent of Article II"? And how did you become aware of it?
The Supreme Court of the United States has never applied the term natural born citizen to any other category than those born in the country of parents who are citizens thereof.
"The citizenship of no man could be previous to the declaration of independence, and, as a natural right, belongs to none but those who have been born of citizens since the 4th of July, 1776."....David Ramsay, 1789.
A Dissertation on Manner of Acquiring Character & Privileges of Citizen of U.S.-by David Ramsay-1789
The Law of Nations or the Principles of Natural Law (1758)
The Laws of Nature and of Nature's God: The True Foundation of American Law