Former Trump envoy Morse Tan faces a South Korea criminal defamation trial for speech on U.S. soil, while American media largely stay silent.
Morse Tan, a U.S. citizen and President Trump’s first-term ambassador-at-large for global criminal justice, went on trial Friday in South Korea on criminal defamation charges tied to remarks about President Lee Jae Myung.
Just the News reported that the case reaches back to comments Tan made on American soil, then followed him into a foreign courtroom, an exit ban, and a possible multi-year prison term.
The core dispute is not a private lawsuit. It is a criminal prosecution of political speech, including statements first delivered in Washington, D.C., in June 2025.
Tan pleaded not guilty. His lawyer told the court South Korea has no jurisdiction over a U.S. citizen for remarks made in the United States, and argued there was no disclosure of false facts, no awareness the statements were false, and no intent to defame.
In June 2025, Tan spoke at a Washington press conference on alleged fraud in South Korea’s presidential election held weeks earlier. He described lawsuits against Lee and a system that, in his view, blocked prosecution of the president.
He also repeated a more explosive claim about Lee’s youth. Tan said it “is said” that the president, “as a youth, was involved in gang raping and murdering a young lady and as a result was put in juvenile detention and therefore was not able to attend junior high.”
National Review noted the charges stem from that 2025 speech delivered in the United States, including remarks at the National Press Club in Washington, D.C.
Prosecutors later checked Lee’s juvenile detention records, which are not publicly disclosed except for judicial or investigative purposes, and concluded Tan’s claims were false, according to indictment reporting summarized in Korean coverage. AFP called the allegations “baseless” and said the claims had been “previously disproven in court.”
Tan has not backed down. At trial, he told the court he stands by the substance of what he said.
"I believe the content regarding President Lee is true."
A second set of comments came in July, when Tan answered questions about his earlier remarks at a public event inside South Korea. He has said that exchange became another basis for the case.
Tan arrived in South Korea in the spring as an election monitor in a privately organized effort. Courts barred him from leaving and cited flight risk.
Fox News reported he has been unable to leave since May and appeared in Seoul Central District Court facing the defamation charges.
The ban has already carried a personal cost. This month, Tan missed his grandmother’s funeral because he could not leave the country.
He told the Daily Caller the proceeding is a “show trial” and called the ordeal “a punch in Trump’s face.” He also said a conviction could bring as much as seven years in prison.
Readers tracking Trump-era diplomatic appointments have seen other ambassador fights play out in public, including the White House pressure that pushed Kimberly Guilfoyle from the Greece post.
Tan’s defenders frame his case differently: not as a personnel dispute, but as a foreign government using criminal law against an American’s political speech.
On Aug. 13, Rep. Young Kim, who chairs the House Foreign Affairs subcommittee on East Asian and Pacific Affairs, led a letter to Korean Ambassador Kang Kyung-wha. GOP Reps. Brian Mast, Chris Smith, and Michael Cloud signed on.
The lawmakers said they had “significant concerns” about the exit ban on Tan, who “thankfully remains in good health and positive spirits,” and argued he “faced remarkably unfair treatment.”
"Tan faced remarkably unfair treatment" and the episode raises "serious concerns about freedom of expression and due process."
They stressed he spoke as “a private American citizen while in the United States,” and said First Amendment rights “must be respected” or South Korea’s conduct “could affect perceptions” of its commitment to representative government, individual liberty, freedom of expression, and the rule of law.
A congressional delegation had met with Tan in July. About a week before Kim’s letter, House Judiciary Chairman Jim Jordan wrote Korea Media and Communications Commission Chair Kim Jong-cheol about a National Assembly amendment to the Information and Communications Network Act.
Jordan said the change gave courts “unprecedented power to punish news outlets and social media users for spreading ‘false or manipulated information’” and to extract damage awards of up to five times any alleged harm, with commission power to impose fines of roughly $656,000. He sought a briefing on enforcement.
That free-speech fight sits in the same broader Trump-era political climate covered when Trump rallied Republicans in Dallas ahead of the midterm fight.
On Aug. 18, Foreign Minister Cho Hyun addressed the case before the National Assembly Foreign Affairs Committee after U.S. outreach.
"The U.S. side requested a smooth resolution despite our explanation of legal enforcement."
Cho also said, “This was not a protest but an effort to address disagreements in South Korea-U.S. relations step by step.”
The State Department, asked about the matter, offered a general policy line rather than a case-specific blast. It said it “stands ready to raise our concerns directly with foreign governments when they use criminal defamation or similar laws to punish U.S. citizens for political speech,” especially “for statements made in the United States.”
Fox News separately reported that U.S. Ambassador to South Korea Michelle Steel has not publicly commented on the case, while a department spokesperson said the Trump administration has “no higher priority than the safety and security of Americans” and declined further specifics.
Diplomatic staffing stories keep drawing attention at home as well, including the scramble after reports that Debbie Matenopoulos moved to bid for the Greece ambassadorship.
Bob Ballinger, chief legal officer for the National Association of Christian Lawmakers, told Just the News his group is activating its network to spotlight Tan’s situation and push for diplomatic action. He said there has been “almost no substantive reporting” in much of the press.
"Whatever one's opinion of Tan's statements, the treatment of an American citizen over speech made in America deserves national scrutiny."
Former Sen. Sam Brownback, who served as Trump’s ambassador-at-large for international religious freedom, called the treatment “shocking.” He said an exit ban would not surprise him for travel to North Korea or Russia, and said he is “really concerned” about arrests and prosecutions of religious leaders, “a horrible trend line for that democracy.”
Tan has used sharp language of his own. At CPAC in 2025 he called South Korea a “rising dictatorship.” In August remarks to the Christian Post, he said the country suffers “massive infiltration by Chinese Communist Party and North Korean spies, operatives and agents.”
Those claims are Tan’s. The legal question driving the trial is whether Seoul can criminalize his speech, including speech first made in America, and hold him inside the country while the case runs.
Comparisons already circulating among free-speech advocates point to other Western cases: Irish comedian Graham Linehan’s arrest on arrival in the U.K. over earlier comments made in America; Reform UK leader Nigel Farage’s warning that Americans could face arrest on U.K. visits for similar views; and pro-life activist Isabel Spruce-Vaughan’s repeated criminal proceedings for silent prayer near abortion clinics, with a January trial pending after a not-guilty plea this month.
In the U.S., the piece also notes Democratic lawyer Marc Elias threatened North Carolina’s North State Journal with a defamation suit over a question about then-Gov. Roy Cooper’s health, a civil threat, not a foreign criminal dockets, but part of the same wider fight over punishing contested political speech.
Trump-world diplomacy remains a live beat for the same audience, including coverage of Trump speaking at a U.S. ambassador’s residence when he described Don Jr.’s life after marrying Bettina Anderson.
Here is the verified sequence. Tan criticized Lee in Washington in June 2025. He later answered related questions at a public event in South Korea in July. He arrived as a private election monitor, was banned from leaving as a flight risk, and missed a family funeral under that ban. House Republicans put their concerns in writing. Seoul’s foreign minister said Washington wanted a smooth resolution. The State Department defended Americans’ political speech in principle while avoiding a detailed public ruling on this docket. Tan pleaded not guilty and says he believes his account of Lee is true. Prosecutors say juvenile records prove the youth-crime claim false.
American mainstream coverage has been thin for months even as the exit ban and indictment moved forward. That gap is why lawmakers, former ambassadors, and Christian legal networks are treating the case as a test of whether allied governments can export speech punishment onto U.S. citizens.
A foreign court is now weighing prison time for an American’s political speech first spoken in the United States. If that standard stands, the First Amendment stops at the water’s edge, and every blunt critic of overseas power learns the real border is not geography, but who holds the gavel.