"The Nuremberg Trials ... had been popular throughout the world and particularly in the United States. Equally popular was the sentence already announced by the high tribunal: death. But what kind of trial was this? ...The Constitution was not a collection of loosely given political promises subject to broad interpretation. It was not a list of pleasing platitudes to be set lightly aside when expediency required it. It was the foundation of the American system of law and justice and [Robert Taft] was repelled by the picture of his country discarding those Constitutional precepts in order to punish a vanquished enemy."
-- U.S. President, John F. Kennedy John Kennedy, Profiles in Courage (New York: Harper and Row, 1964), p.189-190.

"No matter how many books are written or briefs filed, no matter how finely the lawyers analyzed it, the crime for which the Nazis were tried had never been formalized as a crime with the definiteness required by our legal standards, nor outlawed with a death penalty by the international community. By our standards that crime arose under an ex post facto law. Goering et al deserved severe punishment. But their guilt did not justify us in substituting power for principle."
--U.S. Supreme Court Justice William O. Douglas Kennedy, Profiles in Courage p.190.