In 1910, Muñoz Rivera ran for Resident Commissioner in the United States House of Representatives representing the Unionist Party of Puerto Rico, and served from 1911 to 1916.
He won representing the Unionist Party of Puerto Rico, serving from 1911 to 1916. In 1910, Muñoz Rivera ran a campaign for the possition of Resident Commissioner in the United States House of Representatives.
In 1910, Muñoz Rivera ran a campaign for the possition of Resident Commissioner in the United States House of Representatives. He won representing the Unionist Party of Puerto Rico, serving from 1911 to 1916.
In 1910, Muñoz Rivera ran a campaign for the possition of Resident Commissioner in the United States House of Representatives. He won representing the Unionist Party of Puerto Rico, serving from 1911 to 1916.