Most dramatically, no U.S. citizen may engage in commercial transactions with Cuban military entities. Since all hotels and restaurants are government-owned, the only stays legally allowed are in private homes available for rent.
Known as casa particular, these homes, like Air B&B, can be spartan or comfortable but they are far less available than rooms in hotels.
With this change, the U.S. seeks to put a strangle-hold on the Cuban economy. The situation is similar to what it was during the height of the Cold War, which was when I first visited.
If you find a way to visit Havana and I hope you do, here is my article about why you should want to go and tips to help you while you are there.
Over almost twenty years, I visited Havana three times, accompanying my wife along with a d…