Versions of Iowa Code 453B.17 - Exemption -- Iowa hemp Act -- hemp and hemp products on LawServer 2024 Iowa Code 453B.17 – Exemption — Iowa hemp Act — hemp and hemp products 2023 Iowa Code 453B.17 – Exemption — Iowa hemp Act — hemp and hemp products 2022 Iowa Code 453B.17 – Exemption — Iowa hemp Act — hemp and hemp products.