The primary function of the federal judges is to resolve matters brought before the United States federal courts. Most federal courts in the United States are courts of limited jurisdiction, meaning that they hear only cases for which jurisdiction is authorized by the United States constitution or federal statutes. However, federal district courts are authorized to hear a wide range of civil and criminal cases. District Court judges are recognized as having a certain degree of inherent authority to manage the matters before them, ranging from setting the dates for trials and hearings to holding parties in contempt or otherwise sanctioning them for improper behavior. In other circumstances their actions are dictated by federal law, the federal rules of procedure, or "local" rules created by the specific court system itself.