He was also a member of a transitional governing committee in the period between the abdication of Mexican Emperor Agustín de Iturbide and the installation of Guadalupe Victoria as the first president of independent Mexico.

Meetings were held in the guise of a literary society at the home of the priest José María Sánchez, and were under the protection of the corregidor himself.

Besides the Domínguezes and Sánchez, the other conspirators included the licenciados Parra, Laso and Altamirano and the military officers Joaquín Arias, Francisco Lanzagorta Inchaurreri, Ignacio Allende and Juan Aldama.

However, the denunciations of Arias in Querétaro on September 10 and of Juan Garrido in Guanajuato on the 13th, forced the conspirators to take faster action.

In the early morning of the following day, September 16, 1810, Hidalgo gave the Grito de Dolores, signaling the beginning of the war for Mexican independence.

Recognizing his earlier service, Viceroy Juan Ruiz de Apodaca later granted him a small pension.

In 1823 he served as a replacement in the triumvirate that exercised executive power in Mexico after the fall of Emperor Iturbide and before the selection of Guadalupe Victoria as president under the Constitution of 1824.