8. A State, by its laws passed since the adoption of the Constitution, may put a foreigner or any other description of persons upon a footing with its own citizens, as to all the rights and privileges enjoyed by them within its dominion, and by its laws. But that will not make him a citizen of the United States, nor entitle him to sue in its courts, nor to any of the privileges and immunities of a citizen in another State.

9. The change in public opinion and feeling in relation to the African race, which has taken place since the adoption of the Constitution, cannot change its construction and meaning, and it must be construed and administered now according to its true meaning and intention when it was formed and adopted.

10. The plaintiff having admitted, by his demurrer to the plea in abatement, that his ancestors were imported from Africa and sold as slaves, he is not a citizen of the State of Missouri according to the Constitution of the United States, and was not entitled to sue in that character in the Circuit Court.

11. This being the case, the judgment of the court below, in favor of the plaintiff on the plea in abatement, was erroneous.

II.

1. But if the plea in abatement is not brought up by this writ of error, the objection to the citizenship of the plaintiff is still apparent on the record, as he himself, in making out his case, states that he is of African descent, was born a slave, and claims that he and his family became entitled to freedom by being taken by their owner to reside in a territory where slavery is prohibited by act of Congress—and that, in addition to this claim, he himself became entitled to freedom by being taken to Rock Island, in the State of Illinois—and being free when he was brought back to Missouri, he was by the laws of that State a citizen.

2. If, therefore, the facts he states do not give him or his family a right to freedom, the plaintiff is still a slave, and not entitled to sue as a "citizen," and the judgment of the Circuit Court was erroneous on that ground also, without any reference to the plea in abatement.

3. The Circuit Court can give no judgment for plaintiff or defendant in a case where it has not jurisdiction, no matter whether there be a plea in abatement or not. And unless it appears upon the face of the record, when brought here by writ of error, that the Circuit Court had jurisdiction, the judgment must be reversed.

The case of Capron v. Van Noorden (2 Cranch, 126) examined, and the principles thereby decided, reaffirmed.

4. When the record, as brought here by writ of error, does not show that the Circuit Court had jurisdiction, this court has jurisdiction to revise and correct the error, like any other error in the court below. It does not and cannot dismiss the case for want of jurisdiction here; for that would leave the erroneous judgment of the court below in full force, and the party injured without remedy. But it must reverse the judgment, and, as in any other case of reversal, send a mandate to the Circuit Court to conform its judgment to the opinion of this court.