Constitution: Adopted: 1957; Establishes the Federation as a constitutional monarchy with the role of Yang di-Pertuan Agong (Head of State) being largely ceremonial. It also provides for the establishment and the organization of three branches of the government: the bicameral legislative branch (Parliament) which consists of the House of Representatives (Dewan Rakyat) and the Senate (Dewan Negara); the executive branch led by the Prime Minister and Cabinet Ministers; and the judicial branch.