But on Tuesday, answering a question during an Oval Office meeting with the Ukrainian president, Trump focused on lamenting the length of Warmbier's imprisonment and the delay in securing his release.
"His family is incredible ... but he should have been brought home a long time ago", Trump said.
Mr. Trump also referred to Warmbier's death as "a total disgrace."
"The president was pleased that he was able to work with the State Department to get Otto home as soon as he could, but I think when you realize what happened, the president believes that if it had happened sooner or quicker, potentially there might have been additional medical resources that could have been provided".
Wambier's parents did not cite a specific cause of death but blamed "awful, torturous mistreatment" by North Korea.
"We can not know for sure that North Korea killed Mr Warmbier, but I believe it is quite clear that they have a heavy responsibility in the process that led to his death", Moon told CBS television's "This Morning".
If the Trump administration wants to punish North Korea over its treatment of Warmbier, it would need Beijing's help.
Warmbier was visiting North Korea as part of a five-day tour when he was detained at an airport in Pyongyang for allegedly stealing the poster from a hotel. He was sentenced to 15 years in prison and hard labor, according to NPR News.
Delays on Dartford Crossing after crash
Traffic was brought to a halt after what police described as a "serious incident" meant the road was closed for several hours. The collision involved two HGVs and three cars at junction 4 of the motorway on the anti-clockwise carriageway.
American student Otto Warmbier, center, is escorted at the Supreme Court in Pyongyang, North Korea on March 16, 2016. Three other US citizens, including Kim, are still being held in North Korea. "Considering these facts and this tragic outcome we will no longer be organizing tours for USA citizens to North Korea".
US Ambassador to the United Nations Nikki Haley on Tuesday lashed out at North Korea over the death of a 22- year-old American student after he was freed by Pyongyang, saying his memory will serve as an "indelible reminder" of the "barbaric nature" of the regime's dictatorship.
Warmbier's death has only heightened US-North Korean tensions aggravated by dozens of North Korean missile launches and two nuclear bomb tests since previous year in defiance of UN Security Council resolutions.
On Monday, White House spokesman Sean Spicer declined to comment directly on how the administration would respond to North Korea following Warmbier's passing.
"Otto Warmbier's death was a sudden tragedy for all of America", Fowle said in a telephone interview on Tuesday.
Trump on Tuesday called the death of the 22-year-old Warmbier - who was returned comatose to the United States last week after 18 months in captivity - a "total disgrace".
Han added that he was not an expert on detention issues and would not speak to the fate of other American, South Korean, and Canadian detainees still held in North Korea. The company says the "tragic outcome" of Warmbier's trip - the American died after being jailed and had been in a coma - prompted the change.
The travel agency specializes in North Korea tours and is based in the central Chinese city of Xi'an.
Warmbier's sophomore English teacher said he would be "dearly missed".
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