Chavez didn't explain what prompted his decision to try to improve relations just weeks after he accused the U.S. of planning to invade his country.
Officials at the U.S. Embassy in Caracas could not be reached for comment Sunday. There was no immediate reaction from the U.S. State Department or the White House.
Chavez has accused the United States and Colombia of spying on Venezuela and conspiring to topple his "revolutionary" government. Tensions have been exacerbated by a recent agreement between Washington and Bogota granting U.S. troops expanded access to Colombian military bases.