Family members of General Motors crash victims hold a news conference prior to testimony by GM CEO Mary Barra (not pictured) before a House Energy and Commerce Oversight and Investigations Subcommittee hearing on the GM ignition switch recall on Capitol Hill in Washington

Laura Christian, mother of General Motors crash victim Amber Marie Rose, wipes away tears during a news conference prior to the testimony by GM CEO Mary Barra before a House Energy and Commerce Oversight and Investigations Subcommittee hearing on the GM ignition switch recall on Capitol Hill in Washington

Family members of General Motors crash victims Daryl Chansuthus (L) and Candice Anderson wipe away tears at a news conference prior to testimony by GM CEO Mary Barra (not seen) before a House Energy and Commerce Oversight and Investigations Subcommittee hearing on the GM ignition switch recall on Capitol Hill in Washington

Trenton Buzard (2nd L) looks at a picture of himself as a toddler when he was paralyzed in a General Motors car crash, while at a news conference prior to testimony by GM CEO Mary Barra (not pictured) before a U.S. House Energy and Commerce Oversight and Investigations Subcommittee hearing on the GM ignition switch recall on Capitol Hill in Washington