WASHINGTON DC (May 21, 2019) — Congressional Biofuels Caucus co-chairs, Representatives Dave Loebsack (D-IA), Collin C Peterson (D-MN), Rodney Davis (R-IL) and Roger Marshall (R-KS) led a letter to Environmental Protection Agency (EPA) Administrator Andrew Wheeler regarding the EPA’s proposed rulemaking involving modifications to the Reid Vapor Pressure (RVP) waiver for 15-percent