The laws of nature and of nature's God are the 'authoritative guide' used by the Founding Fathers.
Neither the Declaration nor the Constitution can interpret themselves, nor is the Declaration the ultimate standard for interpreting the Constitution. The laws of nature and of nature's God are the standard. The Declaration, however, clearly articulates principles of that law and the Constitution reflects the practical interweaving of those principles in its provisions. Without the immutable laws of nature and of nature's God as an interpretive guide, however, the Declaration of Independence and the Constitution lose their moral force.
On the occasion of the fiftieth anniversary of the inauguration of George Washington, President John Quincy Adams noted:
"The Declaration of Independence and the Constitution of the United States, are parts of one consistent whole, founded upon one and the same theory of government . . . . (yet) even in our own country, there are still philosophers who deny the principles asserted in the Declaration as self-evident truths.
By invoking the "Laws of Nature and of Nature's God" the 56 signers of the Declaration incorporated a legal standard of freedom into the forms of government that would follow. The theory of freedom adopted was simply that God's law was supreme and gave freedom. The phrase "Laws of Nature and of Nature's God" referred to the laws that God in his capacity as the Creator of the universe had established for the governance of people, nations and nature. These laws are variously described as the laws of Creation, God's Creation laws or as the framers elected to refer to them, as the laws of nature and of nature's God. This body of law, whatever it is called, can be ascertained by people through an examination of God's creation, the text of the Bible, and to a certain degree, instinct or reason.
The Laws of Nature and of Nature's God: The True Foundation of American Law
The Law of Nations or the Principles of Natural Law (1758)
At this point there can be little doubt that the Framers of our Constitution considered both Blackstone and Vattel, and they choose Vattel over Blackstone. The Founding Fathers placed into Constitutional concept that the loyalty of a Natural Born Citizen is a loyalty can never be claimed by any foreign political power. The only political power that can exclusively claim the loyalty of a natural born citizen is that power that governs of his birth. Vattel by including the parents and place removes all doubt as to where the loyalties of the natural born citizen ought to lie, as Vattel’s definition removes all claims of another foreign power by blood or by soil, and is the only definition that is in accord with Jay’s letter to Washington.
The Supreme Court of the United States has never applied the term “natural born citizen” to any other category than “those born in the country of parents who are citizens thereof”.
Citizenship Terms Used in the U.S. Constitution - The 5 Terms Defined & Some Legal Reference to Same
"The citizenship of no man could be previous to the declaration of independence, and, as a natural right, belongs to none but those who have been born of citizens since the 4th of July, 1776."....David Ramsay, 1789.
A Dissertation on Manner of Acquiring Character & Privileges of Citizen of U.S.-by David Ramsay-1789