Birfoon: "or even any mention of the right to citizenship by birth under the United States Constitution"<quoted text>
Perhaps the first most important thing to understand about national birthright is that there was no national birthright rule until the year 1866. One will look in vain to find any national law on the subject prior to this year, or even any mention of the right to citizenship by birth under the United States Constitution.
See Lynch v. Clarke, which, incidentally was cited favorably by several federal courts, including the USSC.
“And the constitution itself contains a direct recognition of the subsisting common law principle, in the section which defines the qualification of the President.‘No person except a natural born citizen, or a citizen of the United States at the time of the adoption of this constitution, shall be eligible to the office of President,’ &c. The only standard which then existed, of a natural born citizen, was the rule of the common law, and The only standard which then existed, of a natural born citizen, was the rule of the common law, and no different standard has been adopted since. Suppose a person should be elected President who was native born, but of alien parents, could there be any reasonable doubt that he was eligible under the constitution? I think not.” Lynch v. Clarke, 3 NY Leg. Obs. 236, 246 (N.Y. Ch. 1844).
There is no record that Hamilton's language was ever the "original language".
The Committee of Detail originally proposed eligibility requirements for the Executive under a Tenth article. See William C. Rives, History of the Life and Times of James Madison, Volume 2.
"The tenth article of the plan reported by the committee of detail provided … that the executive power should be vested in a single magistrate, to be styled the President of the United States ...."
The original eligibility clause did not require a person born a citizen in the country:
Concerning this "Tenth Article" it was stated "At the end of the first section, tenth article, add,'he shall be of the age of thirty five years, and a citizen of the United States, and shall have been an inhabitant thereof for twenty one years.'" WEDNESDAY AUGUST 22. IN CONVENTION. 1787.
On September 4, 1787, the eligibility requirements were amended:
"No person except a natural born citizen or a Citizen of the U. S. at the time of the adoption of this Constitution shall be eligible to the office of President; nor shall any person be elected to that office, who shall be under the age of thirty five years, and who has not been in the whole, at least fourteen years a resident within the U. S."