1. American President Barack Obama held British Petroleum (BP) responsible for cleaning up a massive oil spill in the Gulf of Mexico caused by a BP offshore oil rig explosion. The spill has grown to the size of Jamaica and is washing up on beaches in Louisiana. Obama stated that BP is ultimately responsible for paying the costs of response and cleanup operations. 2. The oil spill catastrophe could become the worst in U.S. history, surpassing the 1989 Exxon Valdez disaster. It threatens enormous environmental and economic damage to southern U.S. states along the Gulf coast like Alabama, Florida, Louisiana and Mississippi. Hundreds of species are under threat from the spill.