ExxonMobil chairman and CEO Rex Tillerson, right, accompanied by fellow oil company executives, testifies on Capitol Hill in Washington, Thursday, May 12, 2011, before the Senate Finance Committee. ... more 
ExxonMobil chairman and CEO Rex Tillerson, right, accompanied by fellow oil company executives, testifies on Capitol Hill in Washington, Thursday, May 12, 2011, before the Senate Finance Committee. From right to left are: ConocoPhillips CEO James Mulva, BP America Chairman H. Lamar McKay, and Shell Oil President Marvin Odum, Tillerson. less 
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Associated Press | Photo By J. Scott Applewhite
Thu, May 12, 2011 1:40 PM EDT