The Trump rescheduling marijuana timeline has become a major federal policy development with potential implications for research, healthcare, and regulated industries such as trucking. In December 2025, the White House directed federal agencies to accelerate the process of moving marijuana from Schedule I to Schedule III while expanding medical marijuana and cannabidiol research. While this shift could reduce barriers to scientific studies and pharmaceutical development, it does not automatically legalize marijuana under federal law. For the trucking industry, federal DOT drug testing rules for CDL drivers remain unchanged during the rulemaking process. Fleet operators and safety managers should closely monitor the timeline while continuing to maintain strict compliance with current federal drug testing regulations.