Congress is holding hearings Tuesday on the oil spill in the Gulf of Mexico.
Executives of the three companies involved in the drilling activities that unleashed the environmental crisis are trying to shift responsibility to each other.
Meanwhile, efforts are underway to try to contain the oil. On Monday, National Guard helicopters dropped sandbags on the beaches in an attempt to keep the oil from reaching the marshes.
British Petroleum said it is dropping a smaller version of the containment box to the ocean floor in an attempt to cap the leak after the first box failed.
Meanwhile, workers have started drilling a relief well.
"The worst case scenario is we have to wait until the relief well is drilled, and you're talking anywhere from two months to three months on that," said Greg McCormack, director of the Petroleum Extension Service at the University of Texas.
Authorities said at least 200,000 gallons of crude have begun washing up on beaches in the area.