The Halt All Lethal Trafficking of Fentanyl Act aims to enhance regulations surrounding fentanyl and its related substances in response to the escalating opioid crisis in the United States. By classifying fentanyl-related substances under Schedule I of the Controlled Substances Act, the legislation ensures that any substance structurally related to fentanyl is treated as a controlled substance unless specifically exempted. This classification is accompanied by a process for the Attorney General to publish a list of these substances, which will help maintain appropriate regulatory oversight.