The U.S. Treasury Department’s Office of Foreign Assets Control (OFAC) on Wednesday sanctioned four Mexican nationals and 13 companies for running a multimillion-dollar timeshare fraud on behalf of the Cartel de Jalisco Nueva Generación (CJNG). The network, based in and around the resort city of Puerto Vallarta, allegedly scammed U.S. citizens—many of them elderly—through call-center schemes that demanded up-front fees and taxes for bogus resale or rental deals. Treasury Secretary Scott Bessent said the action aims to cut off alternative revenue streams the cartel uses to finance narcotics and terror operations. CJNG, designated a foreign terrorist organization in February, has increasingly supplemented drug trafficking with fuel theft, extortion and fraud. According to FBI data, roughly 6,000 Americans reported losing nearly $300 million to Mexican timeshare scams between 2019 and 2023. Financial Crimes Enforcement Network records show a further $23.1 million in suspicious transfers during the past six months. Those blacklisted include alleged enforcement figures Julio César Montero Pinzón, Carlos Andrés Rivera Varela and Francisco Javier Gudiño Haro, as well as tourism entrepreneur Michael Ibarra Díaz. OFAC also froze the assets of Ibarra’s 13-company corporate web, which ranges from real-estate brokers Akali Realtors and Centro Mediador de la Costa to tour operator Fishing Are Us. The designations block any U.S. property and bar American persons from dealings with the listed parties. Wednesday’s action, carried out in coordination with the FBI, Drug Enforcement Administration and Mexico’s financial-intelligence unit, marks the fifth round of OFAC sanctions targeting CJNG’s timeshare fraud since 2023. Treasury said it will continue to pursue the cartel’s financial lifelines and urged current and prospective timeshare owners in Mexico to conduct rigorous due diligence.