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January 15, 2009
Before the Committee on Energy and Commerce
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January 24, 2008
Before the Committee on Foreign Relations
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November 15, 2007
Before the Committee on Environment and Public Works
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November 13, 2007
Before the Committee on Foreign Relations
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July 11, 2007
Before the Subcommittee on Asia, the Pacific, and the Global Environment
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May 15, 2007
Before the Committee on Foreign Affairs
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February 28, 2007
Before the Committee on Ways and Means
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February 13, 2007
Before the Subcommittee on Energy and Air Quality
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September 20, 2006
Before the Subcommittee on Energy and Environment
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July 27, 2006
Before the Subcommittee on Oversight and Investigations
