Mr. Justice Harlan,
after stating the case, delivered-the opinion of the court.
After the filing of the petition for removal, accompanied by a sufficient bond, and alleging that the controversy was wholly between citizens of different States, the state court was without authority to proceed further if the suit, in its nature, is one of which the Circuit Court of the United States could rightfully take jurisdiction. If,, under the act of Congress, the cause was removable, then, upon the filing of the above petition and bond, it was in law removed so as to be docketed in that court, notwithstanding the order of the state court refusing to recognize the right of removal. Steamship Co. v. Tugman, 106 U. S. 118, 122; St. Paul & Chicago Railway v. McLean, 108 U. S. 212, 216; Stone v. South Carolina, 117 U. S. 130; Crehore v. Ohio & Miss. Railway, 131 U. S. 210.
Is the right of removal affected by the fact that no one of the judgments against the plaintiff in error exceeded the amount — five hundred dollars exclusive of costs — limited, by the act of 1875, for the jurisdiction, whether original or upon removal, of a Circuit Court of the United States, in suits between citizens of different States? We think not. The-judgments aggregate more than three thousand dollars. They are all held by Mayer, and are all against Mrs. Marshall. Their validity depends upon the same facts. If she is entitled to relief against one of the judgments^ she is entitled, to relief against all of íñem. The cases in which they were' rendered were,, in effect, tried as one case, so far as she and Mayer were concerned; for the parties stipulated that the result in each /5ne not tried should depend upon .the result in the one tfied. As all the cases not tried went to judgment in accordance with the result in the one tried; ás the property of Mrs. Marshall was liable, to be taken in execution oh all the judgments; as the judgments were held in the same right-; and as their validity depended upon the same facts, she' was entitled, in order to avoid a multiplicity of actions, and to protect herself against the' vexation and cost that would come from numerous executions and levies, to bring one suit for a decree finally determining the matter in dispute, in all the cases. And as, under the rules of equity obtaining in the courts of the United States, such a suit could be brought, the aggregate amount of all the judgments against which she sought protection, upon grounds common to all the actions, is to be deemed, under the act of Congress, the value of the matter here in dispute.
According to the averments of the original petition for injunction filed in the state court — which averments must be taken to be true in determining the removability of the suit — the judgments in question would not have been rendered against Mrs. Marshall but for the use in evidence of the letter alleged to be forged. The case evidently intended to be presented by the petition is one where, without negligence, laches or other fault upon the part of petitioner, Mayer has fraudulently obtained judgments which he seeks, against conscience, to enforce by execution. While, as a general rule, a defence cannot be set up in equity which has been fully and fairly tried at law, and although, in view of the large powers now exercised by courts of law over their judgments,.a court of the United States, sitting in equity, will not assume to control such judgments for the purpose simply of giving a new trial, it is the settled doctrine that "any fact which clearly proves it to be against conscience to execute a judgment, and of which the injured party could not have availed himself in- a court of law, or of which he might have availed himself at law, but was prevented by fraud or accident, unmixed with any fault or negligence in himself or his agents, will justify an application to a court of chancery." Marine Ins. Co. v. Hodgson, 7 Cranch, 332, 336; Hendrickson v. Hinckley, 17 How. 443, 445; Crim v. Handley, 94 U. S. 652, 653; Metcalf v. Williams, 104 U. S. 93, 96; Embry v. Palmer, 107 U. S. 3, 11; Knox County v. Harshman, 133 U. S. 152, 154; 2 Story's Eq. Jur. § 887, 1574; Floyd v. Jayne, 6 Johns. Ch. 479, 482. See also United States v. Throckmorton, 98 U. S. 61, 65.
But it is contended that it was not competent for the Circuit Court of the United States, by any form of decree, to deprive Mayer of the benefit of the judgments at law; and that Mrs. Marshall could obtain the relief asked only in the court in which the judgments at law were rendered. Ts it true that a Circuit Court of the United States, in the exercise of its equity powers, and where diverse citizenship gives jurisdiction over the parties, may not, in any case, deprive a party of the benefit of a judgment fraudulently obtained by him in a state court, the circumstances being such as would. authorize relief by the Federal court, if the judgment had been rendered by it and not by a state court ?•
A leading case upon this subject'is Barrow v. Hunton, 99 U. S. 80, 82, 83, 85. That was a suit in one of the courts of Louisiana to annul a judgment rendered in a court of that State, upon the ground that it was founded upon a default taken, without lawful service of the - petition and a citation, and because, prior .to the judgment, the party seeking to have it set aside had been adjudged a bankrupt. The case was re-' moved to the Circuit Court of the United States, and was subsequently remanded to the state court. This court held that the jurisdiction of the Circuit Court depended upon the question whether the action to annul the judgment was or was not in its nature a separate suit, or only a supplementary proceeding so connected with the original suit as to form an incident to it, and to be substantially a continuation of it. It said.: " If the proceeding is 'merely tantamount to the common-law .practice of moving to set aside a judgment for irregularity, or to a writ of error, or to a bill of review or an appeal, it would belong to the latter category, and the United States courts could not properly entertain jurisdiction of the case. Otherwise, the Circuit Courts of the United States would becom'e invested with power to control the proceedings in the state courts, or would have appellate jurisdiction over thetn in all cases where the parties are citizens of different States. Such a result would be totally inadmissible. On the other hand, if the proceedings aré tantamount to a bill in equity to set aside a decree for fraud in the obtaining thereof, then they constitute an original and independent proceeding, and according to the doctrine laid dciwn in Gaines v. Fuentes, 92 U. S. 10, the case might be within the cognizance of the Federal courts. The distinction between the two classes of cases may be somewhat nice, but it may be affirmed to exist. In the one class, there would' be a mere revision of errors and irregularities, or of the legality and correctness of the judgments and decrees of the state courts; and in the other class, the investigation of a new case, arising upon new facts, although having relation to the validity of an actual judgment or decree, or of the party's right to claim any benefit by reason thereof."
Eeferring to the provisions of the Louisiana Code of Prac-' tice authorizing an action to annul a judgment obtained through fraud, bribery, forgery of documents, etc., the court said that it was not disposed to allow the fact -that, by the local law, an action of nullity could only be brought in the court rendering the judgment, or in the court to which the judgment was taken by appeal, to operate so far as to m'ake it an invariable criterion of the want of jurisdiction in the courts of the United States. " If," the court said, " the state legislatures could, by investing certain courts with exclusive jurisdiction over certain subjects, deprive the Federal courts of all jurisdiction, they might seriously interfere with the right of the citizen to resort to those courts. The character of the cases themselves is always open to examination for the purpose of determining whether, rations materias, the courts of the United States are incompetent to take jurisdiction thereof. State rules on the subject cannot deprive them of it." As that proceeding was equivalent in common-law practice to a motion to set aside the judgment for irregularity, or to a writ of error coram vobis, and as the cause of nullity related to form only, the case was held not to be cognizable in the courts of the United States.
The rules laid down in Barrow v. Hunton were applied in Johnson v. Waters, 111 U. S. 640, 667, and Arrowsmith v. Gleason, 129 U. S. 86, 101. In Johnson v. Waters, this court upheld the jurisdiction of the. Circuit Court of the United States, by a decree in an original suit, to deprive parties of the benefit of certain fraudulent sales made under the orders of a Probate Court of Louisiana, which court, by the law of that State, had exclusive jurisdiction of the subject matter of the proceedings out of which the sales arose. After observing that the Court of Chancery is always open to hear complaints against fraud, whether committed in pais or in or by means of judicial proceedings, the court said: " In such cases, the court does not act as a court of review,' nor does it inquire into any irregularities or errors of proceeding in another court; but it. will scrutinize the conduct of the parties, and, if it finds that they have been guilty of fraud in obtaining a judgment or .decree, it will déprive them of the benefit of it, and of any inequitable advantage which they hatfe derived under it." In Arrowsmith v. Gleason, the grounds of the jurisdiction of the Circuit Court of the United States to entertain an original suit-, — the parties being citizens of different States — to set aside a sale óf lands fraudulently made by the guardian of an infant, under authority derived from a Probate Court, are thus stated: "These principles control the present case, which, although, involving rights arising under judicial proceedings in another jurisdiction, is an original, independent suit for equitable relief between the parties; such relief being grounded upon a new state of facts, disclosing not only imposition upon a court of justice in procuring from it authority to sell an infant's lands when there was no necessity therefor, but actual fraud in the exercise, from time to time, of the authority so obtained. As the case is within the equity jurisdiction of the Circuit Court, as defined by the Constitution and laws of the United States, that court may, by its decree, lay hold of the parties, and compel them to do what according to the principles of equity they ought to do, thereby securing and establishing the rights of which the plaintiff is alleged to have been deprived .by fraud and collusion."
These authorities would seem to place beyond question the jurisdiction of the Circuit Court to take cognizance of the present suit, which is hone the less an original, independent suit, because it relates to judgments obtained in the court of another jurisdiction. While it cannot require the state court - itself to set aside or vacate the judgments in question, it may, as between the parties before it, if the facts justify such relief, adjudge that Mayer shall not enjoy the inequitable advantage obtained, by his judgments. A decree to that effect. would operate directly upon him, and would not contravene that provision of the statute prohibiting a court of the United States from granting a. writ of injunction to stay proceedings in a state court'. It would simply take from him the benefit of judgments obtained by fraud.
It was contended at the bar that the cases of Nougué v. Clapp, 101 U. S. 551, and Graham v. Boston, Hardford & Erie Railroad, 118 U. S. 161, 177, announce a different rule. We do not understand those cases to proceed upon any ground inconsistent with the principles announced in the cases above cited. It is true that in Nougué v. Clapp the Circuit Court of the U nited States was asked to set aside a decree of a state court, as well as a sale had under it, upon the ground that the decree was obtained and. the sale conducted pursuant to a fraudulent conspiracy, to' which the person obtaining the decree, and who became the purchaser at the sale, was a party. Here the resemblance between that case and the one -before ,us ends; for in Nougué v. Clapp it did not appear, nor was it alleged, that the facts constituting the fraud were not, before the. rendition of the decree, within the knowledge of the party seeking its annulment, or could not have been discovered in time to bring them in some appropriate mode to the attention. of the .court while the decree was within its control. For aught that appears, that suit was brought simply to obtain a rehearing in the Circuit Court of the United States, sitting in equity, of issues that were, or, by proper diligence, could have been, fully .determined in the suit at law in the state court. The relief thei'e asked could not have been granted consistently with the rule that equity will not interfere with a judgment at law, even where the party has an" equitable defence, if he could, by the exercise of diligence, have- availed himself of that defence in the action at law to which he was a party. This requirement of diligence is, as it ought to be, enforced with strictness.
The case of Graham v. Boston, Hartford & Erie Railroad does not differ in principle from Nougué v. Clapp.
The case before us is unlike the two last cited. While the court, upon final hearing, would not permit Mrs. Marshall, being a party to the actions at law, to plead ignorance of the evidence introduced at the trial, it might be that relief could be granted by reason of the'fact, distinctly alleged, that some of the necessary proof establishing the forgery of the letter was discovered after the judgments at law were rendered, and after the legal delays within which' new trials could have been obtained, and could not have been discovered by her sooner. It was not, however, for the state court to disregard the right of removal upon the ground simply that the averments of the petition were insufficient or too vague to justify a court of equity in granting the relief asked. The suit being, in its general nature, one of which the Circuit Court of the United States could rightfully take cognizance, it was for that court, after the cause was docketed there, and upon final hearing, to determine whether, under the allegations and proof, a case was made which, according to the established principles of equity, entitled Mrs. Marshall to protection against the judgments alleged to have been fraudulently obtained.
For the reasons stated, we are of opinión that this suit was removable from the state conrt,; and that the court below should have reversed the judgment of the Eighth District Court in and for the Parish of Madison, and remanded the cause to the latter court with direction to set aside all orders made after the filing of the petition and bond for the removal of the suit into the Circuit Court of the United States, and to proceed no further in it.
The judgment is reversed, and the cause remanded for such proceedings as are consistent with this opinion.f