Scott Wilson, who was the Washington Post foreign editor at the time, told Oliver Stone for his film South of the Border :
"Yes, the United States was hosting people involved in the coup before it happened. There was involvement of U.S.-sponsored NGOs in training some of the people that were involved in the coup. And in the immediate aftermath of the coup, the United States government said that it was a resignation, not a coup, effectively recognizing the government that took office very briefly until President Chavez returned."
And we know that the United States made quick efforts to have the coup government recognized as legitimate. The Bush government, immediately after the coup, blamed it on Chavez. And some of the coup plotters met with officials at the U.S. embassy in Caracas before they acted.
But the important thing for readers to know, according to Wilson's successors at the Washington Post, is that U.S. officials deny they supported anything.