US, two political veterans are expected to head a US commission investigating a huge oil spill, amid criticism of the government's response. Reports say former Democratic Senator Bob Graham and William Reilly, who once served as environment chief for the Republicans, will lead the inquiry. The oil leak began more than a month ago, when a rig leased by BP exploded. The spill has reached Louisiana and is threatening Florida and Cuba. So far oil company BP has borne the brunt of public outrage over the spill, but analysts say there is now also a growing sense of anger towards the government.