The U.S. was friendly toward the argentine government of the day. We are not friendly toward Chavez. I'm betting we get in.
Maybe we will. But its not a sure thing. Perhaps whoever is president at the time might decide that coming to Britains beck and call is getting a little old, given the current Brown governments exploitation and creation of anti President Bush sentiment.
France has had its adventures in Haiti, and the US MArines assisted there.
British bail out in Basra means that Brown was betting that the US will lose Iraq.Look at the timing of the withdrawal, just before the Sept 15th report is due from Patraeus. Thats not an endearing posture that would be likely to warrant US assistence for Britain against Chavez.
I believe that Gordon Brown will go down in history as the worst Prime Minister Britain has had in the modern era.