The power of Congress to impose the prohibition in the eighth section of the act of 1820 has been advocated upon an attempted construction of the second clause of the third section of the fourth article of the Constitution, which declares that "Congress shall have power to dispose of and to make all needful rules and regulations respecting the territory and other property belonging to the United States."

In the discussions in both houses of Congress, at the time of adopting this eighth section of the act of 1820, great weight was given to the peculiar language of this clause, viz: territory and other property belonging to the United States, as going to show that the power of disposing of and regulating, thereby vested in Congress, was restricted to a proprietary interest in the territory or land comprised therein, and did not extend to the personal or political rights of citizens or settlers, inasmuch as this phrase in the Constitution, "territory or other property," identified territory with property, and inasmuch as citizens or persons could not be property, and especially were not property belonging to the United States. And upon every principle of reason or necessity, this power to dispose of and to regulate the territory of the nation could be designed to extend no farther than to its preservation and appropriation to the uses of those to whom it belonged, viz: the nation. Scarcely anything more illogical or extravagant can be imagined than the attempt to deduce from this provision in the Constitution a power to destroy or in any wise to impair the civil and political rights of the citizens of the United States, and much more so the power to establish inequalities amongst those citizens by creating privileges in one class of those citizens, and by the disfranchisement of other portions or classes, by degrading them from the position they previously occupied.

There can exist no rational or natural connection or affinity between a pretension like this and the power vested by the Constitution in Congress with regard to the Territories; on the contrary, there is an absolute incongruity between them.

But whatever the power vested in Congress, and whatever the precise subject to which that power extended, it is clear that the power related to a subject appertaining to the United States, and one to be disposed of and regulated for the benefit and under the authority of the United States. Congress was made simply the agent or trustee for the United States, and could not, without a breach of trust and a fraud, appropriate the subject of the trust to any other beneficiary or cestui que trust than the United States, or to the people of the United States, upon equal grounds, legal or equitable. Congress could not appropriate that subject to any one class or portion of the people, to the exclusion of others, politically and constitutionally equals; but every citizen would, if any one could claim it, have the like rights of purchase, settlement, occupation, or any other right, in the national territory.

Nothing can be more conclusive to show the equality of this with every other right in all the citizens of the United States, and the iniquity and absurdity of the pretension to exclude or to disfranchise a portion of them because they are the owners of slaves, than the fact that the same instrument, which imparts to Congress its very existence and its every function, guaranties to the slaveholder the title to his property, and gives him the right to its reclamation throughout the entire extent of the nation; and, farther, that the only private property which the Constitution has specifically recognised, and has imposed it as a direct obligation both on the States and the Federal Government to protect and enforce, is the property of the master in his slave; no other right of property is placed by the Constitution upon the same high ground, nor shielded by a similar guaranty.

Can there be imputed to the sages and patriots by whom the Constitution was framed, or can there be detected in the text of that Constitution, or in any rational construction or implication deducible therefrom, a contradiction so palpable as would exist between a pledge to the slaveholder of an equality with his fellow-citizens, and of the formal and solemn assurance for the security and enjoyment of his property, and a warrant given, as it were uno flatu, to another, to rob him of that property, or to subject him to proscription and disfranchisement for possessing or for endeavoring to retain it? The injustice and extravagance necessarily implied in a supposition like this, cannot be rationally imputed to the patriotic or the honest, or to those who were merely sane.

A conclusion in favor of the prohibitory power in Congress, as asserted in the eighth section of the act of 1820, has been attempted, as deducible from the precedent of the ordinance of the convention of 1787, concerning the cession by Virginia of the territory northwest of the Ohio; the provision in which ordinance, relative to slavery, it has been attempted to impose upon other and subsequently-acquired territory.

The first circumstance which, in the consideration of this provision, impresses itself upon my mind, is its utter futility and want of authority. This court has, in repeated instances, ruled, that whatever may have been the force accorded to this ordinance of 1787 at the period of its enactment, its authority and effect ceased, and yielded to the paramount authority of the Constitution, from the period of the adoption of the latter. Such is the principle ruled in the cases of Pollard's Lessee v. Hagan, (3 How., 212,) Parmoli v. The First Municipality of New Orleans, (3 How., 589,) Strader v. Graham, (16 How., 82.) But apart from the superior control of the Constitution, and anterior to the adoption of that instrument, it is obvious that the inhibition in question never had and never could have any legitimate and binding force. We may seek in vain for any power in the convention, either to require or to accept a condition or restriction upon the cession like that insisted on; a condition inconsistent with, and destructive of, the object of the grant. The cession was, as recommended by the old Congress in 1780, made originally and completed in terms to the United States, and for the benefit of the United States, i.e., for the people, all the people, of the United States. The condition subsequently sought to be annexed in 1787, (declared, too, to be perpetual and immutable,) being contradictory to the terms and destructive of the purposes of the cession, and after the cession was consummated, and the powers of the ceding party terminated, and the rights of the grantees, the people of the United States, vested, must necessarily, so far, have been ab initio void. With respect to the power of the convention to impose this inhibition, it seems to be pertinent in this place to recur to the opinion of one cotemporary with the establishment of the Government, and whose distinguished services in the formation and adoption of our national charter, point him out as the artifex maximus of our Federal system. James Madison, in the year 1819, speaking with reference to the prohibitory power claimed by Congress, then threatening the very existence of the Union, remarks of the language of the second clause of the third section of article fourth of the Constitution, "that it cannot be well extended beyond a power over the territory as property, and the power to make provisions really needful or necessary for the government of settlers, until ripe for admission into the Union."

Again he says, "with respect to what has taken place in the Northwest territory, it may be observed that the ordinance giving it its distinctive character on the subject of slaveholding proceeded from the old Congress, acting with the best intentions, but under a charter which contains no shadow of the authority exercised; and it remains to be decided how far the States formed within that territory, and admitted into the Union, are on a different footing from its other members as to their legislative sovereignty. As to the power of admitting new States into the Federal compact, the questions offering themselves are, whether Congress can attach conditions, or the new States concur in conditions, which after admission would abridge or enlarge the constitutional rights of legislation common to other States; whether Congress can, by a compact with a new State, take power either to or from itself, or place the new member above or below the equal rank and rights possessed by the others; whether all such stipulations expressed or implied would not be nullities, and be so pronounced when brought to a practical test. It falls within the scope of your inquiry to state the fact, that there was a proposition in the convention to discriminate between the old and the new States by an article in the Constitution. The proposition, happily, was rejected. The effect of such a discrimination is sufficiently evident."[2]

In support of the ordinance of 1787, there may be adduced the semblance at least of obligation deducible from compact, the form of assent or agreement between the grantor and grantee; but this form or similitude, as is justly remarked by Mr. Madison, is rendered null by the absence of power or authority in the contracting parties, and by the more intrinsic and essential defect of incompatibility with the rights and avowed purposes of those parties, and with their relative duties and obligations to others. If, then, with the attendant formalities of assent or compact, the restrictive power claimed was void as to the immediate subject of the ordinance, how much more unfounded must be the pretension to such a power as derived from that source, (viz: the ordinance of 1787,) with respect to territory acquired by purchase or conquest under the supreme authority of the Constitution—territory not the subject of mere donation, but obtained in the name of all, by the combined efforts and resources of all, and with no condition annexed or pretended.