Iowa Code § 204.16
If the department determines there is a conflict with a regulation or order promulgated by a federal agency and a provision of this chapter, the department may grant a variance or waiver from the provision of this chapter to the extent such variance or waiver is allowed under the federal hemp law and the United States department of agriculture. The waiver or variance shall expire not later than July 1 of the succeeding legislative session.
Implementation of section subject to approval of a state plan as described in section 204.3 by the United States department of agriculture; 2019 Acts, ch 130, §18 NEW section
2019 Acts, ch 130, §16, 18, 19