A U.S. citizen at birth is a natural born citizen, as opposed to a naturalized citizen.
In U.S. vs Wong Kim Ark it was found that the child of two Chinese nationals born in territory under the jurisdiction of the USA was natural born.
So far from needing two U.S. citizen parents to be natural born, one needn't have either parent be a U.S. citizen; so long as by the natural act of being born one has U.S. citizenship conveyed upon them.
But the correct answer isn't always what people want to hear.
“But the correct answer isn’t always what people want to hear.”
You’re right there, but your interpretation of US v Wong Kim Ark and your understanding of “natural born citizen” and “citizen by birth” are a bit off.
The Wong court only determined that the child was a ‘citizen by birth.’ The generation of ‘anchor babies’ being born today to illegal aliens are not ‘natural born citizens,’ although they are, in fact, ‘citizens by birth.’ Their parents are not citizens of the USA and they are, therefore, NOT ‘natural born citizens.’