The Pan-Green Coalition is composed of the pro-independence Democratic Progressive Party and Taiwan Statebuilding Party (TSP). They oppose the idea that Taiwan is part of China, and seeks wide diplomatic recognition and an eventual declaration of formal Taiwan independence. In September 2007, the then ruling Democratic Progressive Party approved a resolution asserting separate identity from China and called for the enactment of a new constitution for a "''normal country''". It called also for general use of "''Taiwan''" as the country's name, without abolishing its formal name, the "Republic of China". The name "Taiwan" has been used increasingly often after the emergence of the Taiwanese independence movement. Some members of the coalition, such as former President Chen Shui-bian, argue that it is unnecessary to proclaim independence because "Taiwan is already an independent, sovereign country" and the Republic of China is the same as Taiwan. Despite being a member of KMT prior to and during his presidency, Lee Teng-hui also held a similar view and was a supporter of the Taiwanization movement.