>>4853394 (lb)

natural borm citizen

Agree with this. Here's some questions to elucidate why I think so:

In 1821 A child is born to a 21 YO woman born & raised is Richmond VA fathered by a 21 YO man, also born & raised in Richmond VA. What citizenship does the baby have?

On the same day a in 1821 a baby is born to an 17 YO girl born & raised in Burlington VT fathered by a 22 YO man born & raised in Sherbrooke Canada who was not a US citizen. What citizenship does the baby have?

In 1961 a baby is born to a 24 YO woman fathered by a 30 YO man, both born & raised in Topeka, KS. What citizenship does the baby have?

On the same day in 1961 a baby is born in Honolulu, HI to a 17 YO girl born & raised in the US fathered by a 24 YO man from British East Africa who was not a US citizen. What citizenship does the baby have?

On the same day in 1961 a baby is born in Nairobi, British East Africa to a 17 YO girl born & raised in the US fathered by a 24 YO man from British East Africa who was not a US citizen. What citizenship does the baby have?

In two of these cases there is no need to look up citizenship laws in effect at the time of birth. Those cases would be the natural born citizens.

Follows then, IMO that:

The term natural born was never defined because it didn't have to be. It's common sense. The other babies above may or may not be citizens of the US, depending upon citizenship laws in effect at the time of birth. You'd have to look it up. The fact that you'd have to look it up means that their citizenship depends upon a law that either naturalizes them or not . They are not born already naturalized, they would have to be naturalized into citizenship if their birth conditions comply with the laws in effect at the time of birth.

so citizen at birth is not always a natural born citizen.

The reason for the natural born issue is that the founding fathers wanted to avoid marriages between US citizens and foreigners designed to usurp power, which may lead to wars of succession as they had done in Europe. That was hammered into kids in HS civics classes back in the day.