Clarifies drug-scheduling definitions and shifts role in scheduling decisions

Adds new statutory definitions to the CSA for terms such as “accepted medical use,” “dependence liability,” “physical dependence,” “psychological dependence,” “lack of accepted safety,” “abuse,” “potential for abuse,” and “misuse.”

Requires the Attorney General to defer to the Secretary’s scientific and medical evaluation when evaluating whether to add or transfer a substance to a controlled-substance schedule.

Limits the Attorney General’s scheduling authority by requiring any added or transferred schedule to be the one that “best corresponds to controls reasonably tailored to protect public health and safety” while preserving access for accepted medical uses and recognizing potential societal benefits.