The cannabis plant contains several cannabinoids, with non-psychoactive cannabidiol (CBD) and psychoactive delta-9 THC among the most well-known. A cannabis plant with levels of delta-9 THC at or below 0.3 percent is considered hemp under federal and state law. The federal Agriculture Improvement Act of 2018 legalized hemp and its derivatives, but synthetic THC remains an illegal substance. Another cannabinoid, delta-8 THC, has recently gained commercial popularity, in part because this potentially lawful psychoactive product may be converted from hemp-derived CBD. Although a substance meeting the definition of “hemp” is legal for purposes of state and federal controlled substances laws, uncertainty surrounds whether delta-8 THC, when converted from hemp-derived CBD, falls within the definition of hemp or instead constitutes synthetic THC.