肯尼迪芝加哥之旅终未成行，就在那天，越南总统吴廷琰被害，肯尼迪便取消了芝加哥之行，有人说，肯尼迪没去芝加哥，不是因为芝加哥暗藏杀机，而是吴廷琰总统被害。
Kennedy never made the trip to Chicago . That same day in Vietnam , President Ngo Dinh Diem was assassinated , and Kennedy canceled his appearance .
吴廷琰