American Professor Held for Questioning By Korean Police Over Allegations He Defamed President Lee
Here is something to keep in mind that freedom of speech in the U.S. does not apply in South Korea. If you say something in the U.S. it can be used to arrest you if you travel to South Korea:

Police plan to question Korean American professor Morse Tan this week over his alleged defamation of President Lee Jae Myung, sources said Tuesday.
The questioning will take place at the Seoul Metropolitan Police Agency at 10 a.m. Wednesday over allegations that the professor at U.S.-based Liberty University falsely accused Lee of involvement in murder as a teenager.
Tan allegedly made the claim at a press conference in the United States last year. He also claimed Lee had been sent to a juvenile detention center for the crime.
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