And Hollywood could have pulled the prediction of Casablanca to avoid upsetting Germany and the pro Nazi german americans - and there was serious pressure put on Hollywood to do this.
Such pressures may have existed in the late 30's, but I don't see how there could have been any pressure to "pull production" of Casablanca for the sake of not offending Nazi germany given that its production was well after the US had entered the war. As far as I can tell Warner Brothers had only first heard of the script by January 1942.