In October 2004, the Constitutional Court dealt a setback to President Roh's plans, ruling that the capital must remain in Seoul in response to a complaint filed by the main opposition, the conservative Grand National Party (now Liberty Korea Party). As such, the Roh administration was forced to modify the project to relocate the majority of government ministries and institutions to Sejong, which would become a special administrative city instead of a new capital. The revised plan was approved by the National Assembly in March 2005. Challenges to the new plan were rejected by the Constitutional Court in November 2005.