"America has long been criticized for refusing to give harbor to the Jews of Europe as Hitler and the Nazis closed in. Now a U.S. Holocaust Memorial Museum scholar tells the extraordinary story of the War Refugee Board, President Franklin D. Roosevelt's little-known effort late in the war to save the Jews who remained. In January 1944, a young Treasury lawyer named John Pehle accompanied his boss to a meeting with the president. For more than a decade,...