US President Barack Obama has said the oil disaster in the Gulf of Mexico will have the same impact on the US psyche as 9/11.
The disaster will “shape how we think about the environment… for years to come”, he told US website Politico.
Mr Obama has arrived in Mississippi on his fourth visit to the affected area. He will also visit Alabama and Florida.
Directors of oil firm BP are meeting to decide whether to suspend dividends as company shares have taken a tumble.
BP saw its shares fall by some 9% in afternoon trading in London.
Earlier, BP said the cost of cleaning up the oil spillage had risen to $1.6bn (