In this image released by the White House, President Obama receives a briefing in the Situation Room of the White House on the BP oil spill in the Gulf of Mexico, on Wednesday, July 21, 2010. Taking part in the meeting are, clockwise from top; Homeland Security Secretary Janet Napolitano, National Incident Commander Adm. Thad Allen, Environmental Protection Agency Administrator Lisa P. Jackson, U.S. Cost Guard Rear Adm. Peter Neffenger, Press Secretary Robert Gibbs, Interior Secretary Ken Salazar, NOAA Administrator Jane Lubchenco, Energy Secretary Steven Chu and Chief of Staff Rahm Emanuel. (AP Photo/Pete Souza)

Photo by: Pete Souza

In this image released by the White House, President Obama receives a briefing in the Situation Room of the White House on the BP oil spill in the Gulf of Mexico, on Wednesday, July 21, 2010. Taking part in the meeting are, clockwise from top; Homeland Security Secretary Janet Napolitano, National Incident Commander Adm. Thad Allen, Environmental Protection Agency Administrator Lisa P. Jackson, U.S. Cost Guard Rear Adm. Peter Neffenger, Press Secretary Robert Gibbs, Interior Secretary Ken Salazar, NOAA Administrator Jane Lubchenco, Energy Secretary Steven Chu and Chief of Staff Rahm Emanuel. (AP Photo/Pete Souza)