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Volkswagen of America CEO Michael Horn strains to hear a question as he testifies on Capitol Hill in Washington, Thursday, Oct. 8, 2015, before the House Oversight and Investigations subcommittee hearing on Volkswagen's emissions-rigging scandal. Horn apologized Thursday as the emissions-rigging scandal engulfing the world's largest automaker deepened and members of Congress said the company violated the public's trust. (AP Photo/Cliff Owen)