A chief judge (also known as presiding judge, president judge or principal judge) is the highest-ranking or most senior member of a lower court or circuit court with more than one judge. According to the Federal judiciary of the United States, the chief judge has primary responsibility for the administration of the court. Chief judges are determined by seniority. The chief judge commonly presides over trials and hearings. In the Supreme Court of the United States the highest-ranking member is the Chief Justice of the United States.