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July 20, 2006
Before the Committee on Oversight and Government Reform
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July 20, 2006
Before the Committee on Oversight and Government Reform
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April 4, 2006
Before the Committee on Energy and Natural Resources
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November 14, 2005
Before the Committee on Foreign Relations
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May 19, 2005
Before the Committee on Foreign Relations
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January 8, 2003
Before the Committee on Commerce, Science, and Transportation
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July 18, 2001
Before the Committee on Governmental Affairs
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July 10, 2001
Before the Committee on Commerce, Science, and Transportation
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March 24, 1999
Before the Committee on Environment and Public Works