Volkswagen Group of America President and CEO Michael Horn testifies before the House Committee on Energy and Commerce Subcommittee on Oversight and Investigations on the Volkswagen emissions cheating scandal Thursday. Mandel Ngan/AFP/Getty Images hide caption

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Secretary Jack Lew stands in his office at the U.S. Department of the Treasury in Washington, D.C., on Wednesday. Ariel Zambelich/NPR hide caption

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