H.R. 5371, signed in November 2025, narrows the federal definition of hemp, banning intoxicating cannabinoids like
delta-8, delta-10, and THCA by capping total THC at 0.3% and prohibiting synthetic cannabinoids. Effective November
2026, the law clarifies employer responsibilities, reducing defenses for positive THC tests and strengthening workplace
safety enforcement, especially in DOT-regulated roles. Businesses must update drug-free policies, educate staff, and
prepare for federal guidance listing natural, synthetic, and THC-like cannabinoids under the new restrictions.

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