would amend the Renewable Fuel Program in CAA §211(o) to allow domestic alternative fuel to be used to satisfy a portion of the required applicable volume of renewable fuel.

would prohibit the Administrator of EPA from granting a waiver under CAA §211(f)(4) for any fuel or fuel additive that will reduce fuel efficiency or cause or contribute to engine damage.

would amend the CAA to provide states increased flexibility in implementing standards through SIPs.