Legalizes under state law marijuana use, growth, cultivation, possession, transportation, storage, or sale. Creates commission to regulate, and provide business licenses for, marijuana cultivation, sales, processing, transportation, and distribution. Applies general retail sales taxes to marijuana, unless exemptions for medical or dietary uses apply. Permits excise tax on marijuana sales, up to 10% of retail price. Prohibits discrimination against marijuana users or businesses. Requires voter approval to zone beyond set limits. Nullifies other local regulations. Prohibits Legislature from enacting marijuana laws. Exempts medical marijuana collectives from licensing, regulatory, and local zoning requirements. Summary of estimate by Legislati...