Elie Wiesel in his office in New York. Wiesel, the Nobel laureate and Holocaust survivor has died. AP Photo/Bebeto Matthews

This April 16, 1945, file photo provided by the U.S. Army shows inmates of the German KZ Buchenwald inside their barrack, a few days after U.S troops liberated this concentration camp near Weimar. The young man seventh from left in the middle row bunk is Elie Wiesel, who would later become an author and Nobel Peace Prize laureate. U.S. Army via AP, file

This April 1945 file photo shows children and other prisoners liberated by the 3rd U.S. Army marching from the Buchenwald concentration camp near Weimar, Germany. The freed prisoners are walking to an American hospital to receive treatment. The tall youth in the line at left, fourth from the front, is Elie Wiesel. Associated Press file

President Jimmy Carter standing by as Elie Wiesel, chairman of the president's Holocaust committee speaks in the White House Rose Garden on Sept. 28, 1979. Wiesel, the Nobel laureate and Holocaust survivor has died. His death was announced Saturday, July 2, 2016 by Israel's Yad Vashem Holocaust Memorial. He was 87. 1979 Associated Press file

Nobel Peace Prize winners Lech Walesa, left, and American Jewish writer Elie Wiesel, right, arrive at the former Auschwitz-Birkenau death camp in Poland in 1988. Wiesel was a prisoner 43 years ago. Associated Press file

Elie Wiesel arrives in the Hungarian Parliament building in Budapest, Hungary, in 2009. Associated Press file

President Barack Obama presents the 2009 National Humanities Medal to Elie Wiesel in the East Room of the White House. Associated Press file

Elie Wiesel smiles during a news conference in Budapest, Hungary, in 2009. Associated Press file