CST -5, CDT -4
There is no U.S. Embassy or consulate in Cuba. The United States is represented by the United States Interests Section, which is technically part of the Swiss Embassy in Havana, though physically separate.
Whether or not a traveller has a license to visit, it is illegal to bring into the U.S. any Cuban cigars or spirits; cigars without labels may be presumed to be Cuban and possibly confiscated.
Toursim website: http://www.visitcuba.com/