This bill makes several changes to federal clean air regulations to streamline the permitting process and provide flexibility to states and industry. The legislation exempts emissions from wildfires, prescribed fires, natural disasters, and state-approved resilience actions from being counted when determining if an area meets air quality standards. It also prevents the EPA from issuing stricter air quality standards for a pollutant if more than 15 percent of previously non-compliant regions still don't meet current standards. The bill allows major pollution sources to reclassify as smaller "area sources" if they reduce emissions below certain thresholds for six months, and it exempts new or modified industrial facilities from stricter standards if they received draft permits before those standards took effect. Additionally, the legislation requires the EPA to study and potentially provide more flexibility regarding how foreign air pollution is factored into state air quality plans.