Yes, I know that this was just a rumor and that Reagan was never actually considered for the role of Rick Blaine that ultimately went to Humphrey Bogart, but, let's assume that, for whatever reason, Bogart is unable to take on the role, while Reagan is available. How does Reagan in Casablanca, rather than Bogart, change the movie, and what would be the cultural impact from this? Presumably, this would make Ronald Reagan an A-list star, which might butterfly away his political career. Then again, being an A-list star hasn't stopped other people from becoming two-term Republican governors of California.