That is the title of this paper which revisits the legendary story of Kurt Gödel‘s purported discovery of a deep logical flaw in the US Constitution on the eve of his citizenship examination in December 1947. But what was this flaw?  No one really knows for sure, since there is no written record of Gödel’s lost discovery. The paper “Gödel’s Loophole,” however, is worth reading because it revisits this enigmatic episode in Gödel’s life and poses a simple question, why is there is no record of and so little academic curiosity regarding the details of Gödel’s purported finding, especially considering his intellectual stature and extraordinary genius?