The Founders knew ancient history. They knew about citizens in Athens and Rome. They also knew English law through Blackstone, as all lawyers in the colonies had. If they had wanted “natural born” to mean something different from what it had meant for generations of colonists, they would have used more precise language to spell it out.
Australia does have a requirement that no one can sit in parliament who is a dual citizen. This causes trouble because so many Australians are eligible for British citizenship through their parents or grandparents. The current prime minister’s father was Italian from Italy. He got around the requirement by claiming that his parents weren’t married and there is no father listed on his birth certificate. No word on whether the birth certificate is fake.
They did. They used the word "citizen", which was common in Switzerland, but not so much in England.
In England they used the word "subject."
That's the common law word you know. They didn't use it.
Implies they didn't use the common law on the issue of "citizen."