BP are leasing the rig in situ. Anyone bothered to find out who from? the answer is a company called Transocean - which is American. Whilst BP are responsible for the management of the drilling operation, Transocean are responsible for the supply of the rig to meet the relevant standards, which includes a working BLOW-OUT PREVENTER!
BP are manning up to the overall resposibilty for the spill, but you can bet that they will be hitting Transocean pretty hard for leasing them crappy equipment.
I've heard that Transocean have faulty BOPs on two of their other rigs
Mr President needs to stop picking on BP and take a look in his own backyard.