While he had described at Swarthmore the basic outline of the Nazi plot against Roosevelt, Rogge had not, per his boss’s instructions, quoted from some of the remarkable top-secret cables a German operative in America sent back to the Foreign Office in Berlin during the 1940 Republican National Convention in Philadelphia. Like the one explaining how a Nazi influence campaign helped secure the anti-interventionist plank of the Republican Party’s official platform, vowing to keep America out of foreign wars: “The success of the isolationist Republicans in the field for foreign policy was made
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