Obama, speaking in Miami, says the US has started to see changes on the island. Obama says US policy aims will remain the same but the nation must find new tools to speak out.
Obama is pointing out that he was born around the same time Fidel Castro took power. He says it doesn't make sense that policies put in place more than 50 years ago would still be effective in the Internet age.
The US cut off diplomatic relations with Cuba in 1961 and began the economic embargo the next year.
Obama spoke at a Democratic fundraiser.