Industrial Hemp: other; cross-references to industrial hemp research and development act within the industrial hemp growers act; amend. Amends secs. 103, 211, 303 & 307 of 2020 PA 220 (MCL 333.29103 et seq.). TIE BAR WITH: HB 4964'25

HB 4966 amends Michigan's Industrial Hemp Growers Act to clarify key definitions and testing requirements for hemp growers and processors. It defines "acceptable THC level" using a scientific method to ensure hemp remains below 0.3% THC, specifies requirements for compliance testing facilities, and updates criminal history verification processes for applicants. These changes directly affect registered hemp growers, processors, and testing labs by standardizing regulatory compliance procedures. The bill focuses on improving clarity in enforcement and testing protocols without altering hemp cultivation rules or financial provisions.