In conclusion, my opinion is, that the decision of the Circuit Court, upon the law arising upon the several pleas in bar, is correct, but that it is erroneous in having sustained the demurrer to the plea in abatement of the jurisdiction; that for this error the decision of the Circuit Court should be reversed, and the cause remanded to that court, with instructions to abate the action, for the reason set forth and pleaded in the plea in abatement.
In the aforegoing examination of this cause, the circumstance that the questions involved therein had been previously adjudged between these parties by the court of the State of Missouri, has not been adverted to; for although it has been ruled by this court, that in instances of concurrent jurisdiction, the court first obtaining possession or cognizance of the controversy should retain and decide it, yet, as in this case there had been no plea, either of a former judgment or of autre action pendent, it was thought that the fact of a prior decision, however conclusive it might have been if regularly pleaded, could not be incidentally taken into view.
I concur in the judgment pronounced by the Chief Justice, but the importance of the cause, the expectation and interest it has awakened, and the responsibility involved in its determination, induce me to file a separate opinion.
The case shows that the plaintiff, in the year 1834, was a negro slave in Missouri, the property of Dr. Emerson, a surgeon in the army of the United States. In 1834, his master took him to the military station at Rock Island, on the border of Illinois, and in 1836 to Fort Snelling, in the present Minnesota, then Wisconsin, Territory. While at Fort Snelling, the plaintiff married a slave who was there with her master, and two children have been born of this connection; one during the journey of the family in returning to Missouri, and the other after their return to that State.
Since 1838, the plaintiff and the members of his family have been in Missouri in the condition of slaves. The object of this suit is to establish their freedom. The defendant, who claims the plaintiff and his family, under the title of Dr. Emerson, denied the jurisdiction of the Circuit Court, by the plea that the plaintiff was a negro of African blood, the descendant of Africans who had been imported and sold in this country as slaves, and thus he had no capacity as a citizen of Missouri to maintain a suit in the Circuit Court. The court sustained a demurrer to this plea, a trial was then had upon the general issue, and special pleas to the effect that the plaintiff and his family were slaves belonging to the defendant.
My opinion in this case is not affected by the plea to the jurisdiction, and I shall not discuss the questions it suggests. The claim of the plaintiff to freedom depends upon the effect to be given to his absence from Missouri, in company with his master, in Illinois and Minnesota, and this effect is to be ascertained by a reference to the laws of Missouri. For the trespass complained of was committed upon one claiming to be a freeman and a citizen, in that State, and who had been living for years under the dominion of its laws. And the rule is, that whatever is a justification where the thing is done, must be a justification in the forum where the case is tried. (20 How. St. Tri., 234; Cowp. S.C., 161.)
The Constitution of Missouri recognises slavery as a legal condition, extends guaranties to the masters of slaves, and invites immigrants to introduce them, as property, by a promise of protection. The laws of the State charge the master with the custody of the slave, and provide for the maintenance and security of their relation.
The Federal Constitution and the acts of Congress provide for the return of escaping slaves within the limits of the Union. No removal of the slave beyond the limits of the State, against the consent of the master, nor residence there in another condition, would be regarded as an effective manumission by the courts of Missouri, upon his return to the State. "Sicut liberis captis status restituitur sic servus domino." Nor can the master emancipate the slave within the State, except through the agency of a public authority. The inquiry arises, whether the manumission of the slave is effected by his removal, with the consent of the master, to a community where the law of slavery does not exist, in a case where neither the master nor slave discloses a purpose to remain permanently, and where both parties have continued to maintain their existing relations. What is the law of Missouri in such a case? Similar inquiries have arisen in a great number of suits, and the discussions in the State courts have relieved the subject of much of its difficulty. (12 B.M. Ky. R., 545; Foster v. Foster, 10 Gratt. Va. R., 485; 4 Har. and McH. Md. R., 295; Scott v. Emerson, 15 Misso., 576; 4 Rich. S.C.R., 186; 17 Misso., 434; 15 Misso., 596; 5 B.M., 173; 8 B.M., 540, 633; 9 B.M., 565; 5 Leigh, 614; 1 Raud., 15; 18 Pick., 193.)