[Joachim]

You say:

Without the laws that define those who are citizens at birth, there would not be any naturally born citizens.

From the article, where it quotes the supreme court majority opinion in Rogers v. Bellei, the supreme court says:

[O]ur law in this area follows English concepts with an acceptance of the jus soli, that is, that the place of birth governs citizenship status except as modified by statute.

[taxcontrol]

So lets take that quote and apply it by looking at the Naturalization Act of 1790. In the first acts of Congress, the requirement for birth on US soil was REMOVED by statute.