In response to President Trump's January 20, 2025 "National Energy Emergency" Executive Order 14156, and citing “ongoing issues with gasoline supplies,” EPA issued an emergency fuel waiver for sales of E15 gasoline (gasoline blended with 15% ethanol). Prior EPA policy had called for roughly half of the country to face a maximum E10 gasoline standard (gasoline blended with 10% ethanol) for terminals starting May 1, 2020, and for retail stations starting June 1, 2025. But EPA has announced that it will extend the 1-psi Reid Vapor Pressure (RVP) waiver for E15 gasoline. EPA notes that this extension initially will remain in place through May 20, the maximum number of days allowed under the Clean Air Act, but that the agency “expects to issue new waivers effectively extending the emergency fuel waiver until such time as the extreme and unusual fuel supply circumstances are no longer present.”