Sovereignty, independence, and a perfect right of self-government, can signify nothing less than a superiority to and an exemption from all claims by any extraneous power, however expressly they may be asserted, and render all attempts to enforce such claims merely attempts at usurpation. Again, could such claims from extraneous sources be regarded as legitimate, the effort to resist or evade them, by protest or denial, would be as irregular and unmeaning as it would be futile. It could in no wise affect the question of superior right. For the position here combatted, no respectable authority has been, and none it is thought can be adduced. It is certainly irreconcilable with the doctrines already cited from the writers upon public law.

Neither the case of Lewis Somersett, (Howell's State Trials, vol. 20,) so often vaunted as the proud evidence of devotion to freedom under a Government which has done as much perhaps to extend the reign of slavery as all the world besides; nor does any decision founded upon the authority of Somersett's case, when correctly expounded, assail or impair the principle of national equality enunciated by each and all of the publicists already referred to. In the case of Somersett, although the applicant for the habeas corpus and the individual claiming property in that applicant were both subjects and residents within the British empire, yet the decision cannot be correctly understood as ruling absolutely and under all circumstances against the right of property in the claimant. That decision goes no farther than to determine, that within the realm of England there was no authority to justify the detention of an individual in private bondage. If the decision in Somersett's case had gone beyond this point, it would have presented the anomaly of a repeal by laws enacted for and limited in their operation to the realm alone, of other laws and institutions established for places and subjects without the limits of the realm of England; laws and institutions at that very time, and long subsequently, sanctioned and maintained under the authority of the British Government, and which the full and combined action of the King and Parliament was required to abrogate.

But could the decision in Somersett's case be correctly interpreted as ruling the doctrine which it has been attempted to deduce from it, still that doctrine must be considered as having been overruled by the lucid and able opinion of Lord Stowell in the more recent case of the slave Grace, reported in the second volume of Haggard, p. 94; in which opinion, whilst it is conceded by the learned judge that there existed no power to coerce the slave whilst in England, that yet, upon her return to the island of Antigua, her status as a slave was revived, or, rather, that the title of the owner to the slave as property had never been extinguished, but had always existed in that island. If the principle of this decision be applicable as between different portions of one and the same empire, with how much more force does it apply as between nations or Governments entirely separate, and absolutely independent of each other? For in this precise attitude the States of this Union stand with reference to this subject, and with reference to the tenure of every description of property vested under their laws and held within their territorial jurisdiction.

A strong illustration of the principle ruled by Lord Stowell, and of the effect of that principle even in a case of express contract, is seen in the case of Lewis v. Fullerton, decided by the Supreme Court of Virginia, and reported in the first volume of Randolph, p. 15. The case was this: A female slave, the property of a citizen of Virginia, whilst with her master in the State of Ohio, was taken from his possession under a writ of habeas corpus, and set at liberty. Soon, or immediately after, by agreement between this slave and her master, a deed was executed in Ohio by the latter, containing a stipulation that this slave should return to Virginia, and, after a service of two years in that State, should there be free. The law of Virginia regulating emancipation required that deeds of emancipation should, within a given time from their date, be recorded in the court of the county in which the grantor resided, and declared that deeds with regard to which this requisite was not complied with should be void. Lewis, an infant son of this female, under the rules prescribed in such cases, brought an action, in forma pauperis, in one of the courts of Virginia, for the recovery of his freedom, claimed in virtue of the transactions above mentioned. Upon an appeal to the Supreme Court from a judgment against the plaintiff, Roane, Justice, in delivering the opinion of the court, after disposing of other questions discussed in that case, remarks:

"As to the deed of emancipation contained in the record, that deed, taken in connection with the evidence offered in support of it, shows that it had a reference to the State of Virginia; and the testimony shows that it formed a part of this contract, whereby the slave Milly was to be brought back (as she was brought back) into the State of Virginia. Her object was therefore to secure her freedom by the deed within the State of Virginia, after the time should have expired for which she had indented herself, and when she should be found abiding within the State of Virginia.

"If, then, this contract had an eye to the State of Virginia for its operation and effect, the lex loci ceases to operate. In that case it must, to have its effect, conform to the laws of Virginia. It is insufficient under those laws to effectuate an emancipation, for want of a due recording in the county court, as was decided in the case of Givens v. Mann, in this court. It is also ineffectual within the Commonwealth of Virginia for another reason. The lex loci is also to be taken subject to the exception, that it is not to be enforced in another country, when it violates some moral duty or the policy of that country, or is not consistent with a positive right secured to a third person or party by the laws of that country in which it is sought to be enforced. In such a case we are told, 'magis jus nostrum, quam jus alienum servemus.'" (Huberus, tom. 2, lib. 1, tit. 3; 2 Fontblanque, p. 444.) "That third party in this instance is the Commonwealth of Virginia, and her policy and interests are also to be attended to. These turn the scale against the lex loci in the present instance."

The second or last-mentioned position assumed for the plaintiff under the pleas in bar, as it rests mainly if not solely upon the provision of the act of Congress of March 6, 1820, prohibiting slavery in Upper Louisiana north of thirty-six degrees thirty minutes north latitude, popularly called the Missouri Compromise, that assumption renews the question, formerly so zealously debated, as to the validity of the provision in the act of Congress, and upon the constitutional competency of Congress to establish it.

Before proceeding, however, to examine the validity of the prohibitory provision of the law, it may, so far as the rights involved in this cause are concerned, be remarked, that conceding to that provision the validity of a legitimate exercise of power, still this concession could by no rational interpretation imply the slightest authority for its operation beyond the territorial limits comprised within its terms; much less could there be inferred from it a power to destroy or in any degree to control rights, either of person or property, entirely within the bounds of a distinct and independent sovereignty—rights invested and fortified by the guaranty of that sovereignty. These surely would remain in all their integrity, whatever effect might be ascribed to the prohibition within the limits defined by its language.

But, beyond and in defiance of this conclusion, inevitable and undeniable as it appears, upon every principle of justice or sound induction, it has been attempted to convert this prohibitory provision of the act of 1820 not only into a weapon with which to assail the inherent—the necessarily inherent—powers of independent sovereign Governments, but into a mean of forfeiting that equality of rights and immunities which are the birthright or the donative from the Constitution of every citizen of the United States within the length and breadth of the nation. In this attempt, there is asserted a power in Congress, whether from incentives of interest, ignorance, faction, partiality, or prejudice, to bestow upon a portion of the citizens of this nation that which is the common property and privilege of all—the power, in fine, of confiscation, in retribution for no offence, or, if for an offence, for that of accidental locality only.

It may be that, with respect to future cases, like the one now before the court, there is felt an assurance of the impotence of such a pretension; still, the fullest conviction of that result can impart to it no claim to forbearance, nor dispense with the duty of antipathy and disgust at its sinister aspect, whenever it may be seen to scowl upon the justice, the order, the tranquillity, and fraternal feeling, which are the surest, nay, the only means, of promoting or preserving the happiness and prosperity of the nation, and which were the great and efficient incentives to the formation of this Government.