Ethanol blending rates increased in 2022 according to the Energy Information Administration (EIA), especially during this summer. In April the Biden EPA issued a one-year emergency waiver to allow year-round E15 in part to reduce retail gasoline prices in response to supply chain disruptions, the war in Ukraine and other factors that led to higher fuel prices at the pump. This was only a temporary emergency waiver, however. In May 2019, the Trump EPA issued a rule allowing year-round use for E15, but in July 2021 the U.S. Court of Appeals struck down the rule based on the fact that Congress, through the Clean Air Act, has the jurisdiction over E15 blends and emissions volatility, and thus, only Congress can change them. Indeed, the Clean A...