Preventing the Financing of Illegal Synthetic Drugs Act

Directs the Comptroller General to study illicit financing tied to the trafficking of synthetic drugs, including fentanyl, methamphetamine, Captagon, and their precursors. The study must map the business of trafficking and related finance, including the roles of transnational criminal organizations and terror syndicates and notable source and transit corridors. It must analyze business models from precursor purchase or production through manufacture, marketing, distribution, sales, and return of proceeds. The study will examine overlaps with human trafficking, the use of online illicit drug markets and social media for marketing, sale, and payment, and financial methods such as payment systems, money laundering, and repatriation. It specifically calls out social apps like Snap Chat, Discord, and Facebook and payment apps like CashApp and asks the Comptroller General to review U.S. Government, intergovernmental, and private sector efforts and identify gaps or resource needs. The Comptroller General must report findings to Congress within one year.