Below are links to the Bureau of Industry and Security of the U.S. Department of Commerce:

Exports and Reexports to Cuba, Iran, and Sudan Under the Trade Sanctions Reform and Export Enhancement Act: http://www.bis.doc.gov/index.php/policy-guidance/country-guidance/sanctioned-destinations

Licensing Policy: http://www.bis.doc.gov/index.php/policy-guidance/country-guidance/sanctioned-destinations/cuba

[This is a mobile copy of Licensing and Export Information]