Congress has recently made some changes concerning the duty-free exemptions for returning U.S. residents.
The $600 exemption that applied to travelers returning directly from any one of the 30 Caribbean Basin or Andean countries has been eliminated. The standard $800 exemption now applies to all countries except U.S. insular possessions (U.S. Virgin Islands, American Samoa and Guam).
If you return directly from a U.S. insular possession, you are allowed a $1,600 duty-free exemption. This can include one liter of alcoholic beverages produced in an insular possession and 4 liters produced in other countries.
Finally, travelers can no longer bring Cuban cigars into the U.S. even if they were purchased in Cuba. In the past, travelers could bring such cigars into the U.S. if they were purchased during legal travel to Cuba. This exception is no longer available.
No Cuban cigars...period!