In a January interview with Spanish-language U.S. network Univision, Obama said Chavez had hindered progress in Latin America, accusing him of exporting terrorist activities and supporting Colombian guerrillas.

"My, what ignorance; the real obstacle to development in Latin America has been the empire that you today preside over," said Chavez, who is a fierce critic of U.S. foreign policy.

Chavez expelled its U.S. ambassador in September in a dispute over U.S. activities in his ally Bolivia, which also expelled its U.S. ambassador. Ecuador's left-wing President Rafael Correa this year kicked out a mid-ranking U.S. diplomat.