would limit the applicability of the final rule entitled "Greenhouse Gas Emissions and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles-Phase 2" to the extent such final rule relates to trailers that do not themselves emit greenhouse gases in connection with a propulsion system. 

would require the EPA Administrator to establish a program under which the Agency shall defer the designation of an area as a nonattainment area for purposes of the 8-hour ozone NAAQS if the area achieves and maintains certain standards under a voluntary early action compact plan.