[BuckeyeTexan]

Since the adoption of the Citizenship Clause of the 14th Amendment in 1868, no law passed by Congress and no court decision has ever separated natural born citizens from citizens of the United States at birth.

That's incorrect. See "7 FAM 1131.6-1 Status Generally" and "7 FAM 1131.7 Citizenship Retention Requirements" in the Foreign Affairs manual of the U.S. Department of State.

I agree that there are only two classes of citizens: born and naturalized. There are, however, multiple paths to each class, most with separate and distinct requirements.

[Nero Germanicus]

You are talking about a U.S. State Department administrative rule for its Bureau of Consular Affairs codified in the Foreign Affairs Manual (Volume 7), not a law passed by Congress and signed by a president.