On September 4, 1961, partly in response, Congress handed the Foreign Assistance Act, a Cold War Act (among many different measures) that prohibited useful resource to Cuba and approved the President to impose a whole trade embargo towards Cuba.
U.S. diplomatic illustration in Cuba is handled with the aid of the United States Embassy in Havana, and there is a comparable Cuban Embassy in Washington, D.C. The United States, however, continues to preserve its commercial, economic, and economic embargo, making it unlawful for U.S. corporations to do enterprise with Cuba.
Learn more about relationship between US and Cuba here:
