Carlos María de Bustamante become deputy for the "Provincia de Mexico" in the Congress of Chilpancingo where he wrote the inaugural speech for Morelos, which "declared that the insurgents were about to free Mexicans from the chains of serfdom imposed on them in 1521." Bustamante participated in the writing of first Mexican Constitution. He spend most of the time between 1815 and 1822 in jail. In 1822, after Mexican independence was achieved, Bustamente was elected deputy of Oaxaca.