In December 1957, Wee was elected as a city councillor for the Kampong Kapor ward with 51.8% of the votes against Ng Teik Sim of the
Liberal Socialist Party. In 1959, he was elected as assemblyman for Sepoy Lines Constituency. The same year, he was appointed as parliamentary secretary to the Minister for Labour and Law. following which he served as
Minister of State for the Environment until 1975. He was also acting Minister for Culture from 1969 to 1970. Wee represented Sepoy Lines at the
first,
second, and
third Parliaments of Singapore.
Corruption charges In April 1975, Wee was charged with five counts of corruption under Section 6(a) of the Prevention of Corruption Act. According to an investigation by the
Corrupt Practices Investigation Bureau (CPIB), between 5 May 1972 and 20 December 1974, through Wee's former schoolmate and Lauw's company secretary, Ong Keng Kok. seven return air tickets to
Jakarta, Wee was represented by
David Marshall, who described his client as a man who had been "quietly led down the slithering path of hell by a snake". At the trial, which lasted for forty days, Wee maintained his innocence and claimed that "in all my discussions with (Lauw's company secretary) Ong, the question of gift, or expectation of gift, on my part has never been raised by me." He explained that he did favours for Lauw simply because he "liked helping people". Wee also alleged that officers from the CPIB had "threatened" his family. On 2 September 1975, District Judge
T. S. Sinnathuray found Wee guilty of all five charges of corruption. Wee appealed his conviction. His appeal lawyer, John Newey, claimed that "there is no provision under any law in Singapore to charge a minister under the Prevention of Corruption Act." On 13 July 1976,
Chief Justice Wee Chong Jin upheld Sinnathuray's ruling for four of the five charges. was "clearly wrong". However, he only resigned as a Member of Parliament for Sepoy Lines two months later. Wee's sentence was further reduced by one-third for good behaviour and he was released from
Changi Prison on 11 July 1977. Reflecting on Wee's case in 2000, former
Prime Minister Lee Kuan Yew remarked: "It was painful to confront him and hear his unconvincing protestations of innocence." ==Business career==