After the independence of Indonesia, Nerus returned to his hometown, Kabanjahe, which at that time was in the State of East Sumatra. He was appointed as the head of the information affairs in Berastagi in 1947, and later as the member of the People's Representative Council of the United States of Indonesia in 1949, representing East Sumatra. After the dissolution of the parliament, he was seated in the Provisional People's Representative Council, as a member from the National People's Party.
