On October 17, 2023, Senators John Thune (R-SD) and Amy Klobuchar (D-MN) reintroduced the Adopt Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation (GREET) Act (S. 3055), a bipartisan bill directing the U.S. Environmental Protection Agency (EPA) to update its greenhouse gas (GHG) modeling for all renewable fuels under the Renewable Fuel Standard (RFS). According to Thune’s October 17, 2023, press release, the bill would require EPA to apply the Argonne National Lab’s GREET Model to any fuel for which EPA has approved a pathway and deemed qualified for the RFS. The press release states that EPA would then be required to update its modeling every five years or report to Congress to affirm its modeling is current or otherwise explain why no updates were made.