"In other words, only children born to American citizens can be considered citizens of the United States since only a American citizen could enjoy the "extent and quality" of jurisdiction of an American citizen now."
Don't blame me if your cited sources say idiotic things.
Did you read the whole thing. Because tnaturalization is discussed at the link. The intent of the Fourteenth Amendment was never to confer citizenship by birth to those children who were born to parents who held allegiance to a foreign country.,