NRDC's Walke talks stay on cross-state rule, litigation on mercury standards

What are the environmental community's plans for litigation on U.S. EPA's new Utility MACT rule? During today's OnPoint, John Walke, clean air director and senior attorney at the Natural Resources Defense Council, discusses the possible legal and legislative challenges to EPA's mercury standards. He also discusses the significance of the D.C. Circuit Court's stay on the Cross State Air Pollution rule.