Higher fines and jail time are being considered by U.S. lawmakers who grilled General Motors Co. Chief Executive Officer Mary Barra over why it took years to recall 2.6 million cars for faulty ignition switches. The questions of what GM and regulators knew and when are bringing together partisan lawmakers. Henry Waxman, the top Democrat on the U.S. House Energy and Commerce Committee, introduced legislation to increase penalties for failing to disclose defects. Senate legislation introduced by Democrats Edward Markey of Massachusetts and Richard Blumenthal of Connecticut would mandate greater industry data disclosures.