As Interior Minister, on 5 February 1975 Rocamora was co-signant of the Decreto 261/75, which marked the beginning of the so-called Operativo Independencia, the first large-scale operation in the period of state terrorism now commonly known as the "Dirty War".

He ran for a seat in the National Chamber of Deputies in the 1951 general election; he competed for the 13th Circunscription of Buenos Aires Province and won with 74.32% of the vote for the 1952–1955 legislative term.

[3] Like all other members of the National Congress, Rocamora was deposed in the 1955 coup d'état, which resulted in the exile of Juan Domingo Perón and the subsequent persecution of peronists by the military régime.

In November 1972, he was part of the entourage that welcomed Perón back to Argentina, alongside other prominent members of the peronist movement such as Héctor José Cámpora, Antonio Cafiero, Raúl Lastiri, Carlos Menem, Nilda Garré, among others.

[6] On 5 February 1975 Rocamora was co-signant of the Decreto 261/75, which marked the beginning of the so-called Operativo Independencia, the first large-scale operation in the period of state terrorism now commonly known as the "Dirty War".

; hacia una nueva etapa histórica, a book recounting the 2001 crisis and summarizing his views on the short-term future of Argentina's political landscape.