Upon the argument of this motion, two questions have been made: first, whether this Court has authority to issue a habeas corpus, where a person is in jail, under the warrant or order of any other Court of the United States; secondly, if it have, whether, upon the facts stated, a fit case is made out to justify the exercise of such an authority.

As to the first question, it is unnecessary to say more, than that the point has already passed in rem judicatam in this Court. In the case of Bollman and Swartwout, (4 Cranch 75.) it was expressly decided, upon full argument, that this Court possessed such an authority, and the question has ever since been considered at rest.

Kearney/Opinion of the Court

The second point is of much more importance. It is to be considered, that this Court has no appellate jurisdiction confided to it in criminal cases, by the laws of the United States. It cannot entertain a writ of error, to revise the judgment of the Circuit Court, in any case where a party has been convicted of a public offence. And undoubtedly the denial of this authority proceeded upon great principles of public policy and convenience. If every party had a right to bring before this Court every case, in which judgment had passed against him, for a crime or misdemeanor or felony, the course of justice might be materially delayed and obstructed, and, in some cases, totally frustrated. If, then, this Court cannot directly revise a judgment of the Circuit Court in a criminal case, what reason is there to suppose, that it was intended to vest it with the authority to do it indirectly?

Kearney/Opinion of the Court

It is also to be observed, that there is no question here, but that this commitment was made by a Court of competent jurisdiction, and in the exercise of an unquestionable authority. The only objection is, not that the Court acted beyond its jurisdiction, but that it erred in its judgment of the law applicable to the case. If, then, we are to give any relief in this case, it is by a revision of the opinion of the Court, given in the course of a criminal trial, and thus asserting a right to control its proceedings, and take from them the conclusive effect which the law intended to give them. If this were an application for a habeas corpus, after judgment on an indictment for an offence within the jurisdiction of the Circuit Court, it could hardly be maintained, that this court could revise such a judgment, or the proceedings which led to it, or set it aside, and discharge the prisoner. There is, in principle, no distinction between that case and the present; for when a Court commits a party for a contempt, their adjudication is a conviction, and their commitment, in consequence is execution; and so the law was settled upon full deliberation, in the case of Brass Crosby, Lord Mayor of London, (3 Wilson, 188.)

Kearney/Opinion of the Court