2022-현재 국회 외교통일위원회 위원
2022-현재 한일의원연맹 간사장
2022.3-2022.6 더불어민주당 비상대책위원장
2021.7-2022.3 국회 운영위원장
2021.4-2022.3 더불어민주당 원내대표
2020.6-2021.7 국회 법제사법위원장
2018-2020 더불어민주당 사무총장
2017-2017 문재인정부 국정기획자문위원회 기획분과위원장
2016-2017 더불어민주당 정책위의장
1999-2000 김대중정부 청와대 행정관

2022- Member, Foreign affairs and Unification Committee
2022- Chief Executive Member, Korea-Japan Parliamentarians’ Union
2022.3-2022.6 Chairperson, Emergency Committee of the Democratic Party of Korea
2021.7-2022.3 Chairman of the House Steering Committee
2021.4-2022.3 Floor Leader, the Democratic Party of Korea
2020.6-2021.7 Chairman of the Legislation and Judiciary Committee
2018-2020 Secretary General, the Democratic Party of Korea
2017-2017 Chariman of Subcommittee on Planning, State Affairs Planning Advisory Committee for President Moon Jae In
2016-2017 Chairman of the Policy Committee, Democratic Party of Korea
1999-2000 Administrator, Office of the President Kim Dae Jung