AB 503 Wisconsin Assembly · 2025-2026 Regular Session

Relating to: the definition of hemp. (FE)

AB 503 updates the legal definition of "hemp" in state law to clarify regulatory boundaries. It establishes a 0.3% THC limit (or up to 1% under federal law) for hemp plants, explicitly excludes FDA-approved drugs, and creates new categories like "hemp-derived cannabinoid products" with restrictions on synthetic cannabinoids. The bill directly affects hemp farmers (who must meet THC testing standards), manufacturers of hemp products (who must comply with new labeling rules), and state agencies like the Department of Agriculture. Key mechanisms include requiring standardized THC testing methods and defining industrial hemp uses (e.g., stalk fiber, seed oil) separate from psychoactive products.
Bill status failed 1 of 4 stages cleared
Introduction
Oct 2025
Committee Review
Floor Vote
Governor
Introduced Oct 9, 2025 Last action Mar 23, 2026
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Oct 9, 2025
Introduced
Introduced by Representatives Brill, Piwowarczyk, Wichgers, Donovan, Behnke, Dittrich, Gundrum, Maxey, O'Connor and Murphy; cosponsored by Senators Kapenga, Wanggaard, Jacque and Nass
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10 primary · 0 co-sponsors

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