As a practical illustration of the principle, we may refer to the legislation of the free States in abolishing slavery, and prohibiting its introduction into their territories. Confessedly, except as restrained by the Federal Constitution, they exercised, and rightfully, complete and absolute power over the subject. Upon what principle, then, can it be denied to the State of Missouri? The power flows from the sovereign character of the States of this Union; sovereign, not merely as respects the Federal Government—except as they have consented to its limitation—but sovereign as respects each other. Whether, therefore, the State of Missouri will recognise or give effect to the laws of Illinois within her territories on the subject of slavery, is a question for her to determine. Nor is there any constitutional power in this Government that can rightfully control her.
Every State or nation possesses an exclusive sovereignty and jurisdiction within her own territory; and, her laws affect and bind all property and persons residing within it. It may regulate the manner and circumstances under which property is held, and the condition, capacity, and state, of all persons therein; and, also, the remedy and modes of administering justice. And it is equally true, that no State or nation can affect or bind property out of its territory, or persons not residing within it. No State, therefore, can enact laws to operate beyond its own dominions, and, if it attempts to do so, it may be lawfully refused obedience. Such laws can have no inherent authority extra-territorially. This is the necessary result of the independence of distinct and separate sovereignties.
Now, it follows from these principles, that whatever force or effect the laws of one State or nation may have in the territories of another, must depend solely upon the laws and municipal regulations of the latter, upon its own jurisprudence and polity, and upon its own express or tacit consent.
Judge Story observes, in his Conflict of Laws, (p. 24,) "that a State may prohibit the operation of all foreign laws, and the rights growing out of them, within its territories." "And that when its code speaks positively on the subject, it must be obeyed by all persons who are within reach of its sovereignty; when its customary unwritten or common law speaks directly on the subject, it is equally to be obeyed."
Nations, from convenience and comity, and from mutual interest, and a sort of moral necessity to do justice, recognise and administer the laws of other countries. But, of the nature, extent, and utility, of them, respecting property, or the state and condition of persons within her territories, each nation judges for itself; and is never bound, even upon the ground of comity, to recognise them, if prejudicial to her own interests. The recognition is purely from comity, and not from any absolute or paramount obligation.
Judge Story again observes, (398,) "that the true foundation and extent of the obligation of the laws of one nation within another is the voluntary consent of the latter, and is inadmissible when they are contrary to its known interests." And he adds, "in the silence of any positive rule affirming or denying or restraining the operation of the foreign laws, courts of justice presume the tacit adoption of them by their own Government, unless they are repugnant to its policy or prejudicial to its interests." (See also 2 Kent Com., p. 457; 13 Peters, 519, 589.)
These principles fully establish, that it belongs to the sovereign State of Missouri to determine by her laws the question of slavery within her jurisdiction, subject only to such limitations as may be found in the Federal Constitution; and, further, that the laws of other States of the Confederacy, whether enacted by their Legislatures or expounded by their courts, can have no operation within her territory, or affect rights growing out of her own laws on the subject. This is the necessary result of the independent and sovereign character of the State. The principle is not peculiar to the State of Missouri, but is equally applicable to each State belonging to the Confederacy. The laws of each have no extra-territorial operation within the jurisdiction of another, except such as may be voluntarily conceded by her laws or courts of justice. To the extent of such concession upon the rule of comity of nations, the foreign law may operate, as it then becomes a part of the municipal law of the State. When determined that the foreign law shall have effect, the municipal law of the State retires, and gives place to the foreign law.
In view of these principles, let us examine a little more closely the doctrine of those who maintain that the law of Missouri is not to govern the status and condition of the plaintiff. They insist that the removal and temporary residence with his master in Illinois, where slavery is inhibited, had the effect to set him free, and that the same effect is to be given to the law of Illinois, within the State of Missouri, after his return. Why was he set free in Illinois? Because the law of Missouri, under which he was held as a slave, had no operation by its own force extra-territorially; and the State of Illinois refused to recognise its effect within her limits, upon principles of comity, as a state of slavery was inconsistent with her laws, and contrary to her policy. But, how is the case different on the return of the plaintiff to the State of Missouri? Is she bound to recognise and enforce the law of Illinois? For, unless she is, the status and condition of the slave upon his return remains the same as originally existed. Has the law of Illinois any greater force within the jurisdiction of Missouri, than the laws of the latter within that of the former? Certainly not. They stand upon an equal footing. Neither has any force extra-territorially, except what may be voluntarily conceded to them.
It has been supposed, by the counsel for the plaintiff, that a rule laid down by Huberus had some bearing upon this question. Huberus observes that "personal qualities, impressed by the laws of any place, surround and accompany the person wherever he goes, with this effect: that in every place he enjoys and is subject to the same law which other persons of his class elsewhere enjoy or are subject to." (De Confl. Leg., lib. 1, tit. 3, sec. 12; 4 Dallas, 375 n.; 1 Story Con. Laws, pp. 59, 60.)
The application sought to be given to the rule was this: that as Dred Scott was free while residing in the State of Illinois, by the laws of that State, on his return to the State of Missouri he carried with him the personal qualities of freedom, and that the same effect must be given to his status there as in the former State. But the difficulty in the case is in the total misapplication of the rule.