President Trump is considering rescheduling marijuana from Schedule I to Schedule III, which could remove DOT’s legal authority to test nearly 4 million CDL drivers, as DOT testing relies on HHS guidelines tied to Schedule I/II substances. Without a safety carve-out, federal marijuana testing could collapse, undermining transportation safety and enforcement. Carriers are advised to maintain strong company drug policies and testing programs independent of federal rules, ensuring safety, compliance, and liability protection even if rescheduling occurs.

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