After fouling sections of Louisiana 's marshes over the past two weeks , the oil was spreading toward the northeast on Tuesday . Oil spill ##s to Mississippi , Alabama . U.S. conducts criminal investigation into oil spill . Mississippi makes a third of Gulf off - limits to fishing . BP puts cost of the response at $ 1 billion .
Oil spill ##s to Mississippi , Alabama . U.S. conducts criminal investigation into oil spill . Mississippi makes a third of Gulf off - limits to fishing . BP puts cost of the response at $ 1 billion .