is a natural and inherent right of all people, indispensable to the enjoyment of the rights of life, liberty and the pursuit of happiness," and (Section I) one of "the fundamental principles of this government" (United States Revised Statutes, sec. 1999). Every natural-born citizen of a foreign state who is also an American citizen, and every natural-born American citizen who is also a citizen of a foreign land, owes a double allegiance, one to the United States, and one to their homeland (in the event of an immigrant becoming a citizen of the US) or to their adopted land (in the event of an emigrant natural-born citizen of the US becoming a citizen of another nation). If these allegiances come into conflict, the person may be guilty of treason against one or both. If the demands of these two sovereigns upon their duty of allegiance come into conflict, those of the United States have the paramount authority in American law; likewise, those of the foreign land have paramount authority in their legal system. In such a situation, it may be incumbent on the individual to renounce one of their citizenships, to avoid possibly being forced into situations where countervailing duties are required of them, such as might occur in the event of war. Oath of allegiance The oath of allegiance is an oath of fidelity to the sovereign taken by all persons holding important public office and as a condition of naturalization. By ancient common law, it was required of all persons above the age of 12, and it was repeatedly used as a test for the disaffected. In England, it was first imposed by statute in the reign of Elizabeth I (1558), and its form has, more than once, been altered since. Up to the time of the revolution, the promise was "to be true and faithful to the king and his heirs, and truth and faith to bear of life and limb and terrene honour, and not to know or hear of any ill or damage intended him without defending him therefrom." This was thought to favour the doctrine of absolute non-resistance, and, accordingly, the Convention Parliament enacted the form that has been in use since that time – "I do sincerely promise and swear that I will be faithful and bear true allegiance to His Majesty ..." In the United States and some other republics, the oath