Not so much Florida, drum, as Miami. the population of Cuban emigres is pretty substantial and they are a pretty forceful and influential lobby there. To imagine that a 50 year embargo by a country's largest trade customer has had no impact is beyond silly. No impact on Fidel Castro's tenure as dictator, maybe. But, all good things must come to an end and, happily, his reign of communist totalitarian rule will not outlive him by much.
This is the "slick Obama" playing to today's crowd, telling them what they want to hear. It is popular among leftists to discredit the embargo as ineffective lately but, during Kennedy's years, it was quite necessary particularly after the German Communists erected the Berlin Wall in utter defiance of the US, and we did nothing except complain while they delivered the materials and built it. So, was Kennedy wrong to impose the embargo, or has everyone since, republican or democrat, been wrong to refuse to end it? The next president will have the pleasure of welcoming the country of post-Castro Cuba as a legal trading partner. Let freedom ring.