David Vitter committee. In response to the April 2010 Deepwater Horizon oil spill at an offshore drilling rig in the Gulf of Mexico threatening the coast of Louisiana, Vitter introduced legislation along with Jeff Sessions of Alabama to increase the liability cap of an oil company from $75 million to its most recent annual profits (or $150 million if greater). In the case of BP, the owner of the oil lease, its liability would be $20 billion. Vitter later introduced an amendment that would remove the cap entirely for this particular spill. Competing Democratic proposals would have raised the liability to $10
Volume and extent of the Deepwater Horizon oil spill in August 2010. USF's David Hollander remarked, "Oil's presence on the ocean floor didn't diminish with time; it grew" and he pointed out, "the layer is distributed very widely," radiating far from the wellhead. In 2013, some scientists at the "Gulf of Mexico Oil Spill and Ecosystem Science Conference" said that as much as one-third of the oil may have been mixed with deep ocean sediments and dragged to the bottom of the ocean floor where it remains, risking damage to ecosystems and commercial fisheries. Oil at or near the site of the spill following well closure has suggested to