CEO Mary Barra defends GMs top lawyer at Senate hearing
Video duration: 2:42
General Motor's top lawyer became the top target at a Senate hearing on ignition switch defects that GM failed to address for years. The automaker's own internal report found that the legal staff had failed to share details of related crash settlements, but CEO Mary Barra defended GMs general counsel Michael Millikin. Hari Sreenivasan reports.