Cameroon's legal system is a mixture of civil law, common law, and customary law. Although nominally independent, the judiciary falls under the authority of the executive's Ministry of Justice. The president appoints judges at all levels. The judiciary is officially divided into tribunals, the court of appeal, and the supreme court. The National Assembly elects the members of a nine-member High Court of Justice that judges high-ranking members of government in the event they are charged with high treason or harming national security.