In September 2023, the Supreme Court of Korea removed him from office as a member of the National Assembly after it upheld his sentence of a suspended eight month prison term for his involvement in forging a fake internship certificate for the son of the Justice Minister Cho Kuk.

Combined Forces Command Shin Il-soon for being alleged to embezzle the troop budget and public funds.

[4][3][2] The investigation was also brought to a bribery occurred at a promotion to general, in which led the then Chief of Army Staff Nam Jae-jun to resign in November.

[1][4][3][2] In 2012, he and other 2 BoD members — Seon Dong-kyu and Kwon Mi-hyuk, criticised that the dismissal proposal against the CEO of MBC, Kim Jae-chul, was failed due to governmental pressure.

[8] On 5 September 2018, Choe was appointed the Secretary to the President for Public Office Discipline, replacing Kim Jong-ho who was moved to the Secretary-General of the Board of Audit and Inspection.

[14] On 19 April, Choe was appointed the interim President of the ODP following the resignation of the incumbent Lee Keun-shik due to the poor performance in the election.

[21] The internship certificate helped Cho Won apply and be admitted into the Yonsei University Graduate School, and receive a master's degree in political science.

[23] However, Kyunghyang Shinmun reported that while he was a lawyer, he once represented Cho Kuk's wife Chung Kyung-shim during a case of property succession.

[25] On 7 January 2020, the Liberty Korea Party filed a lawsuit against Choe for obstruction and breaching the Anti-graft Law.

[29][30] The judge, Jeong Jong-geon, stated according to the claims of the fake internship certificate, Cho Won would have worked an average of twelve minutes for every time he visited the office.

[36] Nevertheless, 3 days later, Lee Bo-kyung, a worker of MBC, posted on her Facebook that the transcript disclosed by Choe was not true.