So, where did you get your crystal ball? The FOUNDERS spoke French, and READ french. They knew exactly what they were doing and WHY. The phrase didn’t getin there by accident. It was deliberate. Your whole argument rests on an ASSUMPTION that the phrase was included for what amounts to accidental reasons. BS. The framers were utterly specific for a reason, regardless of how much you don’t want to believe it.
Some of the founders spoke French. If they had wanted to follow Vattel, they would have used his words, or their English transliterations - ‘native’ or ‘indigenous’. They would NOT have created a new phrase to capture words that were already available in transliterated fashion.
OTOH, if they wanted it to cover the same meaning as “Natural Born Subject” - a phrase from English law - they would have needed to change the last word, since there was no King for an American to be a subject to - thus Natural Born Citizen. A phrase suiting a Republic.
Sorry, but your argument doesn’t hold up. There was a well known phrase in English law that met their needs, and they adapted it to a Republic.
The only reason birthers bring up Vattel is that when they first started quoting him, they didn’t realize that NBC wasn’t found in any translation of Vattel until after the Constitution. Rather than admit their error, they pretend the phrase WAS found in Vattel, and lie to those who don’t know the facts.