North Korean Kang Ho-Rye (second from left), 89, hugs her South Korean relative at a resort at Mount Kumgang, North Korea, in August 2018. Almost 100 South Koreans crossed the armed border to the North to meet their separated families. The U.S. bars citizens from entering North Korea, but some Korean Americans hope the Biden administration will lift the ban and let them visit again. Lee Su-Kil/Pool/Getty Images hide caption
Cindy and Fred Warmbier, parents of Otto Warmbier, released a statement saying, "No excuses or lavish praise can change" the fact that they hold North Korean leader Kim Jong Un responsible for their son's death. The Warmbiers are seen here at the U.N., where they spoke about human rights last May. Shannon Stapleton/Reuters hide caption
The teary-eyed parents of Otto Warmbier, the American student who died days after being freed from imprisonment in North Korea, react to a standing ovation during President Trump's State of the Union address to a joint session of Congress on Jan 30. The parents filed a wrongful death lawsuit against North Korea on Thursday, saying its government tortured and killed their son. Pablo Martinez Monsivais/AP hide caption
North Koreans enjoy beer and snacks last August during the Taedonggang Beer Festival in Pyongyang. The festival, the first of its kind in the country, was held as a promotional event for the locally brewed beer. Korean signs in the background read "Our country is the best." Dita Alangkara/AP hide caption
Mourners carry the coffin of Otto Warmbier after his funeral Thursday. The funeral was held at Wyoming High School, outside Cincinnati. Bryan Woolston/AP hide caption
A China-based tour company says it will no longer take U.S. citizens to North Korea. Here, Chinese vendors sell flags of North Korea and China along the Yalu River in Dandong, northern China, along the border with North Korea. Kevin Frayer/Getty Images hide caption
American student Otto Warmbier speaks as he is presented to reporters in Pyongyang, North Korea in Feb. 2016. Kim Kwang Hyon/AP hide caption
Visitors and medical personnel enter a transport plane carrying Otto Warmbier at a Cincinnati regional airport Tuesday. Warmbier, who was released and medically evacuated from North Korea, has been in a coma for months, his parents said. John Minchillo/AP hide caption
Daniel Kanter (center right), medical director of the neurocritical care program in Cincinnati, speaks to reporters alongside doctors Jordan Bonomo and Brandon Foreman on Thursday. They say released U.S. student Otto Warmbier is in a state "best described as unresponsive wakefulness." John Minchillo/AP hide caption
Otto Warmbier, a 22-year-old University of Virginia undergraduate who has been imprisoned in North Korea since January 2016, is transferred by medical personnel from a transport aircraft to an ambulance at Cincinnati Municipal Lunken Airport on Tuesday night. John Minchillo/AP hide caption
Last month, North Korean authorities detained Tony Kim, an American accounting instructor, at Pyongyang's airport. Above, a plane sits at the Pyongyang airport on April 17. Ed Jones/AFP/Getty Images hide caption
American student Otto Warmbier is escorted at the Supreme Court in Pyongyang, North Korea, on Wednesday. He was sentenced to 15 years of hard labor for subversion after he allegedly stole a propaganda poster. Jon Chol Jin/AP hide caption
Otto Frederick Warmbier, a 21-year-old American student, speaks during a news conference in Pyongyang on Feb. 29. Xinhua News Agency/Getty Images hide caption