Amends section 179B by (1) inserting unspecified text as described in subsection (a) of this bill and (2) adding a new subsection (e) titled 'Designations' that prevents designation of an area as nonattainment for a new or revised NAAQS if the State demonstrates the area would be in attainment but for emissions emanating from outside the United States.

Amends the Clean Air Act (codified starting at 42 U.S.C. 7401 et seq.) by inserting a new section 179C after section 179B establishing that certain sanctions or fees under sections 179 or 185 shall not apply where specified emissions beyond the State's control (including emissions emanating from outside the nonattainment area, exceptional events, or certain mobile source emissions) are demonstrated, and by requiring periodic renewal of that demonstration at least once every 5 years.