This bill establishes the Joint Task Force to Counter Illicit Synthetic Narcotics (JTF-ISN) to address the severe substance abuse and addiction crisis in the United States, largely driven by opioids. It aims to provide strategic coordination and direct operational activities against illicit synthetic narcotics, addressing the current lack of a central coordinating entity among various government efforts. The JTF-ISN will be composed of representatives from numerous federal entities, including the Department of Justice (DEA, FBI), Department of the Treasury (FinCEN, OFAC), Department of Homeland Security (HSI, CBP), Department of State, and the Office of the Director of National Intelligence. It will be led by a Director, appointed by the President with Senate confirmation, who will report to the Attorney General and provide regular reports to Congress on the task force's plans, budget, and operational outcomes. The primary mission of the JTF-ISN is to direct counter-opioid and synthetic narcotics activities, including investigations, disruptions, and prosecutions of trafficking crimes, money laundering, and smuggling. Its authorities include facilitating information sharing, establishing interagency referral protocols, and conducting joint operations and tactical actions with federal, state, tribal, and local law enforcement agencies. A significant focus of the task force will be to develop strategies to address the role of the People's Republic of China in the illicit synthetic narcotics crisis and to pursue legal actions against foreign entities complicit in the opioid trade. Importantly, the bill specifies that the JTF-ISN is not authorized to investigate or prosecute individuals for personal drug use or low-level drug dealing unconnected to larger trafficking networks.