Query: Constitutional Court also serves as what type of arbiter?
Context: Mali's constitution provides for an independent judiciary, but the executive continues to exercise influence over the judiciary by virtue of power to appoint judges and oversee both judicial functions and law enforcement. Mali's highest courts are the Supreme Court, which has both judicial and administrative powers, and a separate Constitutional Court that provides judicial review of legislative acts and serves as an election arbiter. Various lower courts exist, though village chiefs and elders resolve most local disputes in rural areas.