Japan has a parliamentary system of government like Britain and Canada. Unlike the Americans or the French, the Japanese do not elect a president directly. Diet members elect a prime minister from among themselves. The prime minister forms and leads the cabinet of ministers of state. The cabinet, in the exercise of executive power, is responsible to the Diet.
Judicial power lies with the Supreme Court and lower courts, such as high courts, district courts, and summary courts. The Supreme Court consists of a chief justice and 14 other justices, all of whom are appointed by the cabinet. Most cases are handled by district courts. There are also summary courts, which deal with problems like traffic violations. A lay judge system was introduced in May 2009. Under this system, six adult citizens (20 or over) are chosen at random to act as lay judges in criminal cases tried in district courts.