In January 2017, Nazarbayev proposed constitutional reforms, which would allow for the Parliament to have greater role in decision making, calling it "a consistent and logical step in the development of the state". The Parliament approved several amendments to the Constitution on 5 March 2017, making the president no longer able to override parliamentary votes of no-confidence, while giving the legislative branch to form a government cabinet, implementing state programs and policies. The move was seen as way by Nazarbayev to ensure the potential of a peaceful transfer of power.Nazarbayev, along with seventeen heads of state and government from around the world, which included Felipe VI of Spain and leaders of the Shanghai Cooperation Organization member countries, consisting of Russia, China, Kazakhstan, Kyrgyzstan, Uzbekistan, Tajikistan, Pakistan and India, attended the opening ceremony of Expo 2017 which was held in Astana. An estimated 3.86 million people visited the site with Nazarbayev at the closing ceremony on 10 September 2017 calling it as "Kazakhstan's most brilliant achievements since its independence."