McCarthy hid the source of his list, stating that he had penetrated the "iron curtain" of State Department secrecy with the aid of "some good, loyal Americans in the State Department".
麦卡锡藏匿了名单的来源，称他看破了国务院的“铁幕”，得到了“国务院里一些善良、忠诚的美国人的帮助”。