The United States Court of Appeals is a federal court that hears appeals from decisions made by lower courts, including District Courts and some federal administrative agencies. It is divided into 13 circuits, each covering a specific geographic area, and its primary role is to review cases for legal errors rather than to re-examine the facts. Each circuit has a panel of judges who evaluate the arguments presented by both sides. The decisions made by the Court of Appeals can be significant, as they often set legal precedents that influence future cases and interpretations of federal law across the country.