A set of constitutional guarantees for an independent Mexico proclaimed in the Mexican town of Iguala by the Creole leader Iturbide, with the support of the guerrilla leader, Vincent Guerrero. The plan stated that Mexico would be organized as a constitutional monarchy under Ferdinand VII or another European prince, that Roman Catholicism would be the state religion, and that any person, regardless of race, could hold office. The Viceroy Apodaca was deposed and his successor confirmed the guarantees by the convention of Córdoba, but the Spanish government rejected them. The Plan was discarded when Iturbide proclaimed himself emperor (1822).