Multiple times Trump sought to talk with the parents of the captive university student, who was arrested as a tourist last year, but the Warmbiers declined. Two U.S. officials described internal discussions surrounding the Warmbier case on the condition of anonymity. When U.S. officials learned this month that Warmbier was in a coma, Trump personally approved a risky operation to send a diplomat and two doctors to Pyongyang to demand the 22-year-old man's release. Warmbier died Monday in a hospital, days after being reunited with his family.
Source : http://www.latimes.com/politics/la-na-pol-trump-prisoners-20170621-story.html