Americans are allowed to bring unlimited amounts of items such as artwork, music, or informational material if purchased from independent Cuban entrepreneurs that have obtained a license from the Cuban Government to operate as an independent Cuban entrepreneur. In order to qualify for this exception, a traveler must be bringing in an item which is both an acceptable good and purchased from a licensed entrepreneur.
Cuban rum: The famous Havana club or Santiago.
Cuban Cigars: Cohiba, Romeo y Julieta, Montecristo and more.
Hand-made arts and crafts.
Yes, Americans traveling abroad can buy an unlimited number of Cuban cigars and rum as long as it is for personal consumption only. Normal limits on duty and tax exemptions will apply. For more information on limits on duty and tax exemptions https://www.cbp.gov/travel/international-visitors/kbyg/customs-duty-info