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WASHINGTON, DC - April 27: Joshua S. Birnbaum, former managing director of Structured Products Group Trading at Goldman Sachs Group Inc., during the Senate Homeland Security and Governmental Affairs Subcommittee on Permanent Investigations hearing on Wall Street and the financial crisis. (Photo by Scott J. Ferrell/Congressional Quarterly)

WASHINGTON, DC - April 27: Joshua S. Birnbaum, former managing director of Structured Products Group Trading at Goldman Sachs Group Inc., during the Senate Homeland Security and Governmental Affairs Subcommittee on Permanent Investigations hearing on Wall Street and the financial crisis. (Photo by Scott J. Ferrell/Congressional Quarterly)

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