The White House issued an executive order regarding marijuana on December 18, entitled Increasing Medical Marijuana and Cannabidiol Research:
"Sec. 2. Rescheduling Medical Marijuana and Improving Access to Cannabidiol Products. (a) The Attorney General shall take all necessary steps to complete the rulemaking process related to rescheduling marijuana to Schedule III of the CSA in the most expeditious manner in accordance with Federal law, including 21 U.S.C. 811.
"(b) The Assistant to the President and Deputy Chief of Staff for Legislative, Political, and Public Affairs shall work with the Congress to update the statutory definition of final hemp-derived cannabinoid products to allow Americans to benefit from access to appropriate full-spectrum CBD products while preserving the Congress’s intent to restrict the sale of products that pose serious health risks. This will include consultation with appropriate executive departments and agencies and authorities to develop a regulatory framework for hemp-derived cannabinoid products, including development of guidance on an upper limit on milligrams of THC per serving with considerations on per container limits and CBD to THC ratio requirements. The Secretary of Health and Human Services, the Commissioner of Food and Drugs, the Administrator of the Centers for Medicare and Medicaid Services, and the Director of the National Institutes of Health shall develop research methods and models utilizing real-world evidence to improve access to hemp-derived cannabinoid products in accordance with Federal law and to inform standards of care."
The Drug Enforcement and Policy Center at The Ohio State University's Moritz College of Law has a great analysis of Federal Marijuana Rescheduling: Process and Impact.