From the Document: "On January 20, 2021, President Biden issued Executive Order 13990, 'Protecting Public Health and the Environment and Restoring Science to Tackle the Climate Crisis,' which directs federal agencies to review regulations and other agency actions from the Trump Administration, including the federal standards that regulate fuel economy and greenhouse gas (GHG) emissions from new passenger cars and light trucks. These standards include the Corporate Average Fuel Economy (CAFE) standards promulgated by the National Highway Traffic Safety Administration (NHTSA) and the Light-Duty Vehicle GHG Emission Standards promulgated by the U.S. Environmental Protection Agency (EPA). NHTSA and EPA have not released a proposal for a new set of standards at this time."
CRS In Focus, IF10871
Congressional Research Service: https://crsreports.congress.gov/