The part you cite has to be taken into the context of the fact that a person born anywhere outside of the United States of citizens of the United States will also be a citizen, and also a natural born citizen, BY RIGHT OF BIRTH. The portion you cite means that the person born of a non-citizen father has no right-of-birth status and has to go through the legalization process, not that they can never become a citizen.
As I said, the Act has been replaced, but its value now lies in the fact that it defines what the founders meant by “natural born citizen”.
According to the Naturalization act of 1790, Someone born outside our borders to a non-citizen father does not get American Citizenship.
What it tells you is that citizenship descends from the Father, just as does the family name.
As I said, the Act has been replaced, but its value now lies in the fact that it defines what the founders meant by “natural born citizen”.
It is a fallacy to assert that "natural born" means "subject to the whim of the legislature when they see fit to change it's meaning."
"Natural born" means born in accordance with the laws of nature, not the laws of man.
"Citizenship" is a consequence of the Declaration of Independence, not the US Constitution. It is not "defined" by the Declaration, it is merely recognized as a natural condition.