Yeah, this is basically the answer- Cuban American lobby is solidly against the current regime. Less so than they used to be, but there are still plenty of voices strongly opposed to normalization and few strongly for it.
Without a strong counter vailing lobby there is little reason for politicians to risk alienating the Cuban bloc to normalize relations with a fairly repressive government that still remains broadly anti-American and opposed to US interests.
Without a strong counter vailing lobby there is little reason for politicians to risk alienating the Cuban bloc to normalize relations with a fairly repressive government that still remains broadly anti-American and opposed to US interests.