If the Anglo-American colonies, when their independence of Great Britain was achieved and acknowledged, were severally sovereign states, it has never since been in their power to unite and form a single sovereign state, or to form themselves into one indivisible sovereign nation. They could unite only by mutual agreement, which gives only a confederation, in which each retains its own sovereignty, as two individuals, however closely united, retain each his own individuality. No sovereignty is of conventional origin, and none can emerge from the convention that did not enter it. Either the states are one sovereign people or they are not. If they are not, it is undoubtedly a great disadvantage; but a disadvantage that must be accepted, and submitted to without a murmur.
Whether the United States are one sovereign people or only a confederation is a question of very grave importance. If they are only a confederation of states--and if they ever were severally sovereign states, only a confederation they certainly are--state secession is an inalienable right, and the government has had no right to make war on the secessionists as rebels, or to treat them, when their military power is broken, as traitors, or disloyal persons. The honor of the government, and of the people who have sustained it, is then deeply compromised.
What then is the fact? Are the United States politically one people, nation, state, or republic, or are they simply independent sovereign states united in close and intimate alliance, league, or federation, by a mutual pact or agreement? Were the people of the United States who ordained and established the written constitution one people, or were they not? If they were not before ordaining and establishing the government, they are not now; for the adoption of the constitution did not and could not make them one. Whether they are one or many is then simply a question of fact, to be decided by the facts in the case, not by the theories of American statesmen, the opinion of jurists, or even by constitutional law itself. The old Articles of Confederation and the later Constitution can serve here only as historical documents. Constitutions and laws presuppose the existence of a national sovereign from which they emanate, and that ordains them, for they are the formal expression of a sovereign will. The nation must exist as an historical fact, prior to the possession or exercise of sovereign power, prior to the existence of written Constitutions and laws of any kind, and its existence must be established before they can be recognized as having any legal force or vitality.