is as much a citizen as the natural-born child of a citizen
No one has a problem with "natural born" like some of the previous posters who completely omitted those two words. However, I would argue your question to be one of interpretation.
One may very well be a citizen of equals to the natual -born child of a citizen but, they are still not natural born and in no way does the statement above implicitly or through vagaries say otherwise.
"as much a citizen" is not the same as "natural-born".
“for if he (a foreign national) hath issue (a child) here, that issue is a natural-born subject;”
Amazing how Dinofrio seemed to leave off that crucial passage.
Kim Wong Ark is clear that a child of a foreign national born here is a natural-born subject.
Justice Scalia’s view that there are only two types of citizenship is supported by the law and the U.S. Constitution.
One is either a natural born citizen; by the natural act of being born they became a U.S. citizen - or a naturalized citizen; via a legal naturalization process to confer citizenship.