Live: Lawmakers Grill Amtrak and Safety Regulators Over Deadly Crash

Officials from Amtrak, the National Transportation Safety Board, the Federal Railroad Administration and a labor union are facing tough questions into the causes of the deadly May 12 train crash in Philadelphia on Capitol Hill today at a hearing of the House Committee on Transportation and Infrastructure.
Lawmakers are expected to press officials to find out why automatic train control technology that slows trains that are going too fast wasn't in place before the deadly derailment, which killed eight and injured more than 200.