There is a bill in congress right now that is attempting to do precisely that. At the risk of taking this off topic, there was a measure introduced by the republicans just this past month that ties reform of immigration laws regarding Mexaco to allowing US oil companies to buy shares in Pemex, despite Mexico not wanting to sell. So you could say that we are trying to do just exactly what you suggest. We're just using blackmail rather than bombs.


The story can be seen here.