Summary

Amends the Clean Air Act to let States avoid being labeled "nonattainment" for new or revised air-quality standards when they can show the pollution came from outside the United States (including non‑human sources). It also prevents certain federal sanctions and fees for serious ozone and particulate nonattainment areas when a State demonstrates the cause was outside the area, an exceptional event, or mobile‑source emissions beyond the State’s control, with that demonstration required to be renewed at least every five years. The change does not remove a State’s duty to adopt and implement plans to attain air-quality standards; it mainly limits EPA’s ability to impose specific sanctions and designations if the State proves the problem was caused by factors beyond its control or by foreign emissions.

• Prevents EPA from designating an area as nonattainment for a new or revised NAAQS if the State shows foreign (including non‑human) emissions caused the exceedance.
• Creates a new statutory provision making certain sanctions and fees inapplicable for Severe/Extreme ozone and Serious PM nonattainment areas under specific demonstrations.
• Allows demonstrations based on three causes: emissions from outside the nonattainment area (including outside the U.S.), exceptional events, or mobile‑source emissions beyond State control.
• Requires renewal of any demonstration at least once every five years to maintain relief from designation or sanctions.
• Does not remove a State’s duty to adopt and implement required attainment measures — only limits certain EPA sanctions and designations.
• Applies only to particular nonattainment categories (Severe/Extreme ozone and Serious particulate matter) and to new or revised NAAQS designations.
• Does not create new federal funding or programs; changes are administrative and statutory in nature.
• Likely to increase administrative workload for States and legal review by EPA and may prompt more litigation over demonstration sufficiency.