He was a member of the Legislative Assembly from 1957 until 1973, and served as Minister for the Post Office, Radio and Broadcasting between 1957 and 1970.
[2][3] In 1956 he was convicted of failing to account for goods at his employer and sentenced to six months in prison.
Following the elections, he was appointed Minister for the Post Office and Radio, with Broadcasting added to his portfolio in 1958.
He was re-elected in 1961, 1964 and 1967, retaining his ministerial portfolio under Prime Minister Fiame Mata'afa following each election.
Although he was re-elected again in 1970, Mata'afa lost the election for Prime Minister and Galu was not appointed to a post in the new cabinet.