Prime Minister Keizō Obuchi of the Liberal Democratic Party (LDP) decided to draft legislation to make the "Hinomaru" and "Kimigayo" official symbols of Japan in 2000. His Chief Cabinet Secretary, Hiromu Nonaka, wanted the legislation to be completed by the 10th anniversary of Emperor Akihito's enthronement. This is not the first time legislation was considered for establishing both symbols as official. In 1974, with the backdrop of the 1972 return of Okinawa to Japan and the 1973 oil crisis, Prime Minister Kakuei Tanaka hinted at a law being passed enshrining both symbols in the law of Japan. In addition to instructing the schools to teach and play "Kimigayo", Tanaka wanted students to raise the "Hinomaru" flag in a ceremony every morning, and to adopt a moral curriculum based on certain elements of the Imperial Rescript on Education pronounced by the Meiji Emperor in 1890. Tanaka was unsuccessful in passing the law through the Diet that year.