Mexican gulf oil spill

In my opinion the strategic view at this problem results in two questions:

First, what happens (to BP, Obama, the southern states, the oil industry, drilling regulations) when the oil leak is filled/closed?

Second, what happens when the oil leak in the Mexican golf can't be closed?

Which political and economic pressure groups will gain more influence from this environmental disaster and how will they put this "influence" in action.

I'm not an "expert" of oil leaks and I don't know how to repair them and therefore it is more interesting and fruitful to "speculate" (drawing likely conclusions) about the consequences of this actions (we may call them tactical or operational objectives or actions).