For 20 YEARS UN says CUBA Si, Castro Si... But US Says CUBA Si, Castro No!
According to US, Cuba is a totalitarian police state which relies on repressive methods to maintain control. These methods include intense physical and electronic surveillance of both Cuban citizens and foreign visitors. Americans visiting Cuba should be aware that any on-island activities could be subject to surveillance, and their contacts with Cuban citizens monitored closely.
The United States does not have full diplomatic relations with Cuba, but Cuba welcomes American travelers and Americans are generally well received. The United States Government provides consular and other services through the U.S. Interests Section in Havana.
The U.S. Interests Section operates under the legal protection of the Swiss government but is not co-located with the Swiss Embassy. Read the Department of State Background Notes on Cuba for additional information.