According to the Montenegrin Constitution,[7] state status could not be changed without a referendum proposed by the President to the Parliament. The Law on the Referendum on State Legal Status was first submitted by President Filip Vujanović, and it was unanimously passed by the Montenegrin Parliament on 2 March 2006.[8] In addition to formulating the official question to be printed on the referendum ballot, the law also included a three-year moratorium on a repeat referendum, such that if the referendum results had rejected independence, another one could have been legally held in 2009.[9]