Handout of U.S. President Obama being briefed on Gulf oil spill while aboard Air Force One en route to Louisiana

U.S. President Barack Obama listens during a briefing on the BP oil spill in the Gulf of Mexico, while aboard Air Force One en route to New Orleans, Louisiana, in this White House handout photo taken on May 2, 2010 and released on June 7, 2010. Picture taken May 2, 2010. REUTERS/Pete Souza/The White House (UNITED STATES - Tags: POLITICS ENVIRONMENT ENERGY DISASTER) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS