file the case last month because "it was necessary to straighten out" the matter before the court.

The constitutional debate takes place against a backdrop of complaints that the government isn't giving complete information about the condition of Chavez, who hasn't spoken publicly since his fourth cancer-related surgery in Cuba four weeks ago.

"It's very evident that he isn't governing, and what they want us to believe is that he's governing, and they're lying," opposition leader Ramon Guillermo Aveledo told the television channel Globovision. He insisted that the National Assembly president should take over temporarily as interim leader and that the Supreme Court should appoint a panel of doctors to determine Chavez's condition.

It was unclear how the opposition would respond to Morales' statement.

Venezuela's constitution says the oath of office shouldbe taken before lawmakers in the National Assembly on Jan. 10. But the charter adds that if he is unable to be sworn in by the National Assembly, the president may take the oath before the Supreme Court, without explicitly stating a date.

Opponents maintain that even if the oath is taken before the Supreme Court, it should be on Jan. 10.

The opposition has argued that the only legal way to postpone the ceremony is for congress to approve a "temporary absence" for the president, leaving the head of the National Assembly as interim president for 90 days, a period that could be extended for an additional 90 days.

But Morales said that as of now, "there is not even a temporary absence."

Vice President Nicolas Maduro broke the news that