would reduce the fuel economy obligations of automobile manufacturers whose fleets contain at least 50 percent fuel choice enabling vehicles.

would require EPA to fulfill certain requirements before regulating standards of performance for new, modified, and reconstructed fossil fuel-fired electric utility generating units.

would repeal EPA's most recent rule for new residential wood heaters.

would amend the renewable fuel program under the CAA to require the cellulosic biofuel requirement to be based on actual production.

would amend the CAA with respect to the ethanol waiver for the Reid vapor pressure limitations.

would amend the CAA to eliminate the exemption for aggregation of emissions from oil and gas sources.

would improve the establishment of any lower ground-level ozone standards.

would improve the establishment of any lower ground-level ozone standards.