President Donald J. Trump and First Lady Melania Trump welcome three Americans at Joint Base Andrews, Md., May 10, 2018. Tony Kim, Kim Dong-Chul and Kim Hak-Song were released from a North Korean prison, May 9, 2018 during Secretary of State Mike Pompeo's second visit to the North Korean capital of Pyongyang. (U.S. Air Force photo by Senior Airman Emma James)