Yes all natural born Citizens are citizens by birth but not all Citizens born here are natural born Citizens. Throughout U.S. history, whenever the Supreme Court referred to a person as a "natural born citizen", the person was always born in the United States, of U.S.-citizen parents
References, please.
All the case law I've found has only referred to citizens as people who are born in this country, and without reference to where the parents were born with the exception of foreign invaders and those here under the auspices of a foreign government.
In every SCOTUS ruling I've read, the justices have favored jus soli over jus sanguinis. Lower courts have pretty much been in step with them.
Even if the framer of the 14th amendment DID intend jus sanguinis along with jus soli, he didn't write it that way, and it wasn't ratified that way.
Sure. Examples are Perkins v. Elg and Kwock Jan Fat v. White.
In Minor v. Happersett (1874), the Supreme Court defined two classes of children. Each member of the first class was "born in a country of parents who were its citizens". All other native-born children belonged to the second class:
The Constitution does not, in words, say who shall be natural-born citizens. Resort must be had elsewhere to ascertain that. At common-law, with the nomenclature of which the framers of the Constitution were familiar, it was never doubted that all children born in a country of parents who were its citizens became themselves, upon their birth, citizens also. These were natives, or natural-born citizens, as distinguished from aliens or foreigners. Some authorities go further and include as citizens children born within the jurisdiction without reference to the citizenship of their parents. As to this class there have been doubts, but never as to the first. (Minor v. Happersett, 1874).
The Court used the term "natural born citizen" only in reference to members of the first class. The Court expressed doubts as to whether members of the second class were even citizens, let alone natural born citizens.