In some parts of the country, like San Diego (above), gas prices are above $4 a gallon. Some Republicans are trying to tie those higher prices at the pump to President Obama's energy policies. Gregory Bull/AP hide caption

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Tea Party supporters hold signs across from a rally held by the American Federation of State, County and Municipal Employees in front of the Maryland State Capitol building in Annapolis on March 14. Mark Wilson/Getty Images hide caption

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Secretary of Defense Robert Gates (left) and Chairman of the Joint Chiefs of Staff Admiral Mike Mullen testify before the House Armed Services Committee on Thursday about Operation Odyssey Dawn. Saul Loeb/AFP/Getty Images hide caption

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Senate Armed Services Committee Chairman Sen. Carl Levin (D-MI, left) and ranking member Sen. John McCain (R-AZ) listen to testimony Tuesday by Air Force Gen. C. Robert Kehler on the U.S. mission in Libya. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP