I've seen in numerous lists/timelines/etc. in a world where the Nazis won the figure of Henry Wallace being used as a left-wing McCarthy as part of a "Brown scare" against fascists. While this is obviously a fun idea, turning the guy against the Cold War into its strongest advocate in an event of an ideological reversal, is it actually realistic? Did Wallace have the personality to lead such a movement in the event that the Cold War pitted the U.S. against victorious Nazis or right-wing Russians or some other rightist rival rather than the leftist USSR? Or would it be unrealistic for him to be such a person regardless of the ideology of America's rival?