US and Mexican authorities have intensified pressure on Sinaloa Cartel factions and the Jalisco New Generation Cartel through expanded sanctions, multimillion-dollar rewards, and joint intelligence operations targeting remaining high-ranking figures. Following the February 2026 killing of CJNG leader Nemesio Oseguera Cervantes (“El Mencho”), his stepson Juan Carlos Valencia González emerged as a primary fugitive with substantial bounties attached. Sinaloa leadership targets include Ismael Zambada Sicairos (“Mayito Flaco”), who assumed control of the Los Mayos faction after his father’s 2024 arrest, along with plaza bosses and financial operators in Baja California and Sinaloa. Recent arrests of mid-level Chapitos associates and US indictments underscore ongoing extradition and disruption efforts that could shape 2026 outcomes.