the correct boundary requires Congressional approval. Although it has not happened since 1794 in the case of Georgia v. Brailsford, parties in an action at law in which the Supreme Court has original jurisdiction may request that a jury determine issues of fact. Georgia v. Brailsford remains the only case in which the court has empaneled a jury, in this case a special jury. Two other original jurisdiction cases involve colonial era borders and rights under navigable waters in New Jersey v. Delaware, and water rights between riparian states upstream of navigable waters in Kansas v. Colorado. A cert petition is voted on at a session of the court called conference. A conference is a private meeting of the nine justices by themselves; the public and the justices' clerks are excluded. The rule of four permits four of the nine justices to grant a writ of certiorari. If it is granted, the case proceeds to the briefing stage; otherwise, the case ends. Except in death penalty cases and other cases in which the court orders briefing from the respondent, the respondent may, but is not required to, file a response to the cert petition. The court grants a petition for cert only for "compelling reasons", spelled out in the court's Rule 10. Such reasons include: Resolving a conflict in the interpretation of a federal law or a provision of the federal Constitution Correcting an egregious departure from the accepted and usual course of judicial proceedings Resolving an important question of federal law, or to expressly review a decision of a lower court that conflicts directly with a previous decision of the court. When a conflict of interpretations arises from differing interpretations of the same law or constitutional provision issued by different federal circuit courts of appeals, lawyers call this situation a "circuit split"; if the court votes to deny a cert petition, as it does in the vast majority of such petitions that come before it, it does so typically without comment. A denial of a cert petition is not a judgment on the merits of a case, and the decision of the lower court stands as the case's final ruling. To manage the high volume of cert petitions received by the court each year (of the more than 7,000 petitions the court receives each year, it will usually request briefing and hear oral argument in 100 or fewer), the