Chairman and CEO James Mulva ConocoPhillips (C) testifies before a Senate Judiciary Committee hearing on Consolidation in the Oil and Gas Industry and its result of raising prices, in Washington on March 14, 2006. Mulva was joined by Chairman and CEO ExxonMobil Corp. Rex Tillerson (L) and Chairman and CEO Cheveron Corp. David O' Reilly. (UPI Photo/Kevin Dietsch)