Chávez has announced his support for the Iranian president's claim of election victory. The two leaders have developed close ties based on mutual animosity to the US.
Clashes with government forces left more than 30 dead last week, sparking concerns about a full-scale revolt. Protesters are fighting laws that would open their rainforest home to energy and agribusiness development.
Secretary of State Hillary Clinton meets Wednesday with the Millenium Challenge Corporation to decide whether to cancel US aid in response to the leftist leader's alleged attempts to steal elections.
Cuba has shown no desire to rejoin. Socialist states like Venezuela and Nicaragua say they want to form an association that excludes the US.
Lawmakers passed a measure late Tuesday calling for a referendum on whether to allow the popular President Álvaro Uribe to run for a third term. Critics say that would be bad for democracy.
President Hugo Chávez denounced Globovision, the sole television channel in Venezuela that regularly criticizes him, for reporting an earthquake before the government announced it.