Watch GM CEO Mary Barra testify before Congress
The new head of General Motors, Mary Barra, is on Capitol Hill today starting what will be two days of testimony.
She'll be questioned about a safety defect that's been linked to at least 13 deaths and has sparked a 2.6 million-vehicle recall.
At issue: What did GM know about the problems with ignition switches in its cars, and when did the company know it?
Watch it below: