We can see from the article the CIA was involved.

The failed coup in Venezuela was closely tied to senior officials in the US government, The Observer has established. They have long histories in the 'dirty wars' of the 1980s, and links to death squads working in Central America at that time.

Washington's involvement in the turbulent events that briefly removed left-wing leader Hugo Chavez from power last weekend resurrects fears about US ambitions in the hemisphere.

It also also deepens doubts about policy in the region being made by appointees to the Bush administration, all of whom owe their careers to serving in the dirty wars under President Reagan.

One of them, Elliot Abrams, who gave a nod to the attempted Venezuelan coup, has a conviction for misleading Congress over the infamous Iran-Contra affair.

The Bush administration has tried to distance itself from the coup. It immediately endorsed the new government under businessman Pedro Carmona. But the coup was sent dramatically into reverse after 48 hours.

Now officials at the Organisation of American States and other diplomatic sources, talking to The Observer, assert that the US administration was not only aware the coup was about to take place, but had sanctioned it, presuming it to be destined for success.

Given the fact that the US has no problem with overthrowing democratically elected governments when it doesn't suit it's needs past 2002 and it has publicly advocated regime change in Venezuela, why would it be surprising to you that the US could also be heavily involved in Venezuela?.

They're just not owning it because it was a failure so they resorted to other methods.