21st-century fossil fuel regulations in the United States spill has been the Deepwater Horizon spill of 2010. With the exception of Kalamazoo River (2010), all other major spills have occurred around the Gulf of Mexico. In May 2010, the United States Department of the Interior called for an end to drilling in the area of the Deepwater Horizon spill. Despite pushback from oil companies and states, the Supreme Court ruled to keep the moratorium in place until October 2010. BP agreed to financial compensation for the damage they caused, including payouts to the Deepwater Horizon Oil Spill Trust. Regulations drafted after the accident required oil companies to update
Environmental impact of the Deepwater Horizon oil spill that the damage from the spill would rapidly resolve, three years into the recovery dolphins continue to die, fish are showing strange lesions, corals in the gulf have died and oil still remains in some marsh areas. Due to both its size and the way it was handled, there is little previous research to predict long-term effects. At the 2013 "Gulf of Mexico Oil Spill and Ecosystem Science Conference", oceanographer David Hollander presented data that showed as much as one-third of the oil released during the spill may still be in the gulf. Researchers described a phenomenon called "dirty blizzard":