against the State, but for the purpose of asserting a constitutional defence against a claim made by a State. “Under the judiciary act, the effect of a writ of error is simply to bring the record into court, and submit the judgment of the inferior tribunal to re-examination. It does not, in any manner, act upon the parties; it acts only on the record. It removes the record into the supervising tribunal. Where, then, a State obtains a judgment against an individual, and the court rendering such judgment overrules a defence set up under the Constitution or laws of the United States, the transfer of this record into the Supreme Court for the sole purpose of inquiring whether the judgment violates the Constitution or laws of the United States can, with no propriety, we think, be denominated a suit commenced or prosecuted against the State, whose judgment is so far re-examined. Nothing is demanded from the State. No claim against it, of any description, is asserted or prosecuted. The party is not to be restored to the possession of anything. Essentially, it is an appeal on a single point; and the defendant who appeals from a judgment rendered against him, is never said to commence or prosecute a suit against the plaintiff, who has obtained the judgment. The writ of error is given rather than an appeal, because it is the more usual mode of removing suits at common law; and because, perhaps, it is more technically proper, where a single point of law, and not the whole case, is to be re-examined. But an appeal might be given, and might be so regulated as to effect every purpose of a writ of error. The mode of removal is form, not substance. Whether it be by writ of error or appeal, no claim is asserted, no demand is made by the original defendant; he only asserts the constitutional right to have his defence examined by that tribunal whose province it is to construe the Constitution and laws of the Union. “The only part of the proceeding which is in any manner personal is the citation. And what is the citation? It is simply notice to the opposite party that the record is transferred into another court, where he may appear, or decline to appear, as his judgment or inclination may determine. As the party who has obtained a judgment is out of court, and may, therefore, not know that his cause is removed, common justice requires that notice of the fact should be given him: but this notice is not a suit, nor has it the effect of process. If the party does not choose to appear, he cannot be brought into court, nor is his failure to appear considered as a default. Judgment cannot be given against him for his non-appearance; but the judgment is to be re-examined, and reversed or affirmed, in like manner as if the party had appeared and argued his cause.