Rep. Na Kyung-won, left, of the conservative People Power Party, speaks with Morse Tan, former U.S. ambassador-at-large for global criminal justice, during a seminar on the Korea-U.S. alliance at the National Assembly in Seoul, March 6, 2025. Newsis

Police are pushing to impose a travel ban on Morse Tan, a Korean American professor accused of defaming President Lee Jae Myung, information obtained by Yonhap News Agency showed Monday.

Police asked the Ministry of Justice earlier Monday to approve an exit ban for Tan, citing flight risk after he failed to comply with a previous summons, according to the obtained information.

Police are also expected to make another attempt to summon and question Tan, dean of Liberty University School of Law who formerly served as U.S. ambassador-at-large for global criminal justice under the first Donald Trump administration.

Tan is suspected of having defamed the Korean president by spreading false information about him, claiming during an event in Washington last year that Lee had been involved in a gang rape and murder of a girl during his youth, and that he was sent to a juvenile detention center.