Nearly all of the cases heard by the [[U.S. Supreme Court]] are based on its power of appellate jurisdiction over a lower court. However, the [[U.S. Supreme Court]] refuses to hear about 99% of the cases appealed to it, and it only decides about 75 cases a year as of 2007. | Nearly all of the cases heard by the [[U.S. Supreme Court]] are based on its power of appellate jurisdiction over a lower court. However, the [[U.S. Supreme Court]] refuses to hear about 99% of the cases appealed to it, and it only decides about 75 cases a year as of 2007. |