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May 15, 2012
Before the Committee on Energy and Natural Resources
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May 25, 2011
Before the Subcommittee on Oversight and Investigations
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July 27, 2010
Before the Subcommittee on Asia, the Pacific, and the Global Environment
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November 4, 2009
Before the Committee on Foreign Affairs
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October 21, 2009
Before the House Select Committee on Energy Independence and Global Warming
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September 15, 2009
Before the Committee on Energy and Natural Resources
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July 8, 2009
Before the Committee on Finance
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April 23, 2009
Before the Subcommittee on Energy and the Environment
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March 18, 2009
Before the Subcommittee on Energy and the Environment
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February 4, 2009
Before the House Select Committee on Energy Independence and Global Warming
