A joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Environmental Protection Agency relating to "Air Plan Approval; Montana; Regional Haze Plan for the Second Implementation Period".

This joint resolution would disapprove an EPA rule that approved Montana's plan for reducing regional haze—air pollution that impairs visibility—in national parks and wilderness areas. If this resolution passes, it would overturn the EPA's approval of Montana's plan, which includes strategies to reduce emissions from power plants and other industrial sources that contribute to haze. The resolution is currently in the Senate and has not yet been voted on. As a binding joint resolution, if approved by Congress and signed by the President, it would have the force of law and prevent the EPA rule from taking effect.