He started his political career in 1995, by elected as one of the member of state council of Gangwon-do.
During the period of the impeachment of the president Park Geun-hye, he was one of the member for hearings, along with Chang Je-won and Kwon Sung-dong.
When he was elected as a member of parliament in 2016, he was arrested due to a corruption scandal.
[3] On the other hand, as those who're sentenced less than 1 million won can continue their positions, he had no problem to keep his membership.
[5] The reason was that the returning of them was strongly opposed by pro-Parks in LKP.