I see. That makes sense. Well I was always under the belief that the US depended on their oil exports? They are something like the 5th largest exporter in the world and the one with the most oil reserves. Isn't that something significant?
But stopping shipments to the US would not fundamentally alter anything. Oil is traded on a worldwide basis in very liquid markets meaning plenty of buyers and plenty of sellers. Venezuela would not stop selling oil therefore there would be no change to total worldwide supply and demand. The US would simply source additional supply from elsewhere. The net effect would be minimal on both parties...pennies on the barrel.
The US gov't knows this. Chavez knew this too. His statements had nothing to do with economics and were not even directed at the US. His statements and threats are/were designed for domestic political reasons so he could show his base that he would stand up to the US. No one in the industry took his threats seriously and no one cared anyway because everyone knows that it would have no meaningful impact.
Hence the idea that these statements lead to some US conspiracy is absurd.
Also, I just want to make it clear that I don't think he was assassinated.