"In fact a de facto state of war between Germany and the United States had existed since September 11, 1941, when Roosevelt had authorized American naval commanders who encountered German vessels to fire at them 'on sight'. This was possible because the tide of American public opinion had been running against the Axis powers, despite the best efforts of isolationists like Senator Hiram W. Johnson, neutralists like the lawyer and legal historian Charles Warren and crypto-fascists like the aviator Charles Lindbergh. Ordinary Americans did not want war. Many believed they had been duped into the last war by the machinations of British imperialists and North-Eastern business interests. They were strongly attracted to the neutralists' idea that by prohibiting military supplies or loans to combatant countries Congress could avoid another such entanglement. But they supported American rearmament from as early as 193 6. They clearly favoured Britain over Germany from 1938 onwards. Above all, Americans did not want to see an Axis victory - and by September 1939 a majority of voters saw that this was best insured against by supplying arms and material to Britain. The German victories of 1940 caused that view to spread. There was public support, too, for the sanctions imposed on Japan which set the course for Pearl Harbor."