The Congress of Tucumán had moved to Buenos Aires, after having issued the Argentine Declaration of Independence in San Miguel de Tucumán. The draft was based on the current laws ruling the United Provinces of the Río de la Plata, as well as in foreign constitutions like those of the US, France or Spain. It was written by José Mariano Serrano, Diego Estanislao Zavaleta, Teodoro Sánchez de Bustamante, Juan José Paso and Antonio Sáenz.