A pair of Republican lawmakers in the House of Representatives used the day before Thanksgiving to release a new proposal for Renewable Fuel Standard (RFS) reform that would replace the annual mandated volumes with a new standard for high octane finished motor fuel. Those two are Representatives John Shimkus (R-Illinois), who has spent the past few years working on an RFS reform plan that all sides could accept, and Bill Flores (R-Texas), who has a RFS reform proposal to cap ethanol use at 9.7 percent of the fuel supply. Shimkus is the outgoing chairman of the Environment subcommittee of the House Energy and Commerce Committee. The plan has its roots in the subcommittee’s April 2018 hearing on high octane fuels. Shimkus said at that...