Nomination On November 16, 2023,
President Yoon Suk Yeol nominated Cheong as the replacement for Justice
Yoo Nam-seok, who retired from the Constitutional Court on November 10, 2023. On December 12, 2023, the
National Assembly held a
hearing on Cheong's nomination. During the hearing, Cheong evaluated the increase in
impeachment proceedings as "the process of the Constitution coming to life" while declining to comment on specific impeachment cases pending before the Constitutional Court. Cheong also remarked that "
homosexuality is a realm of the
right to self-determination, but it can be restricted to the extent necessary." In response, Cheong stated "if it is an organization with clear colors, I think I (as a constitutional judge) should not do that." While legislators from the ruling
People Power Party deemed Cheong to be qualified, legislators from the opposition
Democratic Party found Cheong to be unqualified based on his prior rulings in the Lee Jae-yong case. On the same day, Cheong received his official letter of appointment from President Yoon and attended an
inauguration ceremony at the Constitutional Court on December 19, 2023.
Tenure When Cheong, who was classified as a conservative justice, joined the Constitutional Court in December 2023, the court was reorganized as a conservative-moderate majority court for the first time since 2019. Since joining the court, media outlets have consistently classified him as a conservative.
Impeachment rulings On May 30, 2024, Cheong joined a 5–4 majority of the Constitutional Court in dismissing the impeachment of Ahn Dong-wan, a deputy chief prosecutor from the . The National Assembly had initially impeached Ahn for the retaliatory prosecution of a
Seoul official.
Medical Act On February 28, 2024, Cheong was part of a 6–3 majority of the Constitutional Court that held the Medical Act's ban on revealing the sex of a
fetus until the 32nd week of
pregnancy was unconstitutional. The court held restricting gender disclosure was no longer reasonable as the
preference for male children has declined as evidenced by South Korea's
sex ratio at birth reaching the normal range in 2014. The majority found that the tax provisions had a legitimate purpose of promoting
price stability and were not excessive. While Cheong joined four justices in also finding the Act's emissions reduction targets for 2030 to be inadequate and unconstitutional, they lacked the six votes required to overturn this portion of the Act. == Personal life ==