David Friedman, acting administrator of the National Highway Traffic Safety Administration, testifies at a House Energy and Commerce hearing on Capitol Hill in Washington April 1, 2014. Congress is trying to establish who is to blame for at least 13 auto-related deaths over the past decade, as public hearings are held over two days on General Motors Co's slow response to defective ignition switches in cars.
REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS TRANSPORT)