The U.S. Treasury Department has pointed to Julio Alberto Castillo Rodríguez as a potential successor to Nemesio Oseguera Cervantes, also known as ‘El Mencho’, the deceased leader of the Jalisco New Generation Cartel (CJNG). Castillo is reportedly involved with the CJNG and is married to Jessica Johanna Oseguera, one of the daughters of the late drug lord. This familial connection appears to strengthen his position within the cartel, as he is considered to have significant influence over operations critical for the CJNG's operations.

The U.S. Treasury's report emphasizes Castillo's role in the port of Manzanillo in Colima, a crucial location for the cartel's logistical operations. His influence there has allowed the CJNG to secure precursor chemicals essential for producing fentanyl and other narcotics that are trafficked into the United States. This revelation starkly highlights the ongoing threat posed by the CJNG and its leadership dynamics as the cartel navigates through the aftermath of Oseguera’s death.

In June of last year, the U.S. Treasury designated Castillo Rodríguez along with other CJNG members due to their criminal activities. Analysis from the report provides insights into the internal leadership structure of the CJNG, indicating the ongoing challenges faced by law enforcement in combating organized crime in the region. Other individuals mentioned, such as Gonzalo Mendoza Gaytán and Audias Flores, suggest a continuing cadre of leadership within the CJNG as it seeks to maintain its power and influence even amidst the shifting dynamics following Oseguera's death.