US President Donald Trump on Monday, February 23, 2026, called on Mexico to intensify its fight against drug cartels and fentanyl trafficking following the death of Nemesio Oseguera Cervantes—better known as "El Mencho"—the longtime leader of the Jalisco New Generation Cartel (CJNG). In a post on his Truth Social platform, Trump wrote: "Mexico must step up their effort on Cartels and Drugs!" The blunt demand came less than 24 hours after Mexican federal forces confirmed the elimination of one of the world's most wanted drug lords in a high-risk operation that has since sparked widespread retaliatory violence across multiple Mexican states.
The military action unfolded early Sunday in Tapalpa, a rural municipality in Jalisco state located about 130 kilometers (80 miles) south of Guadalajara. According to Mexico's Secretariat of National Defense (Sedena), Special Forces units moved to apprehend Oseguera Cervantes at a suspected safe house. Cartel gunmen opened fire on the troops, prompting a defensive response that left four CJNG members dead at the scene and three others mortally wounded; the wounded died during medical evacuation to Mexico City. Authorities identified one of the deceased as Ruben "N" (alias "El Mencho"), though final forensic confirmation via DNA and other methods remains pending. Two additional cartel members were taken into custody, and security forces seized armored vehicles, an assortment of firearms, and rocket-propelled grenades capable of downing helicopters or low-flying aircraft.
The United States provided intelligence support for the operation, a fact confirmed by White House spokeswoman Karoline Leavitt on Sunday. Leavitt described El Mencho as a "top target" for both countries due to his central role in smuggling vast quantities of fentanyl and methamphetamine into the US market. She also noted that President Trump had designated the CJNG a foreign terrorist organization in 2025, expanding tools to disrupt its financial and operational networks.
El Mencho, aged 59, had led the CJNG since its formation around 2010, building it into Mexico's most powerful and ruthless criminal syndicate. The group controls major ports for importing chemical precursors from Asia, dominates fentanyl production laboratories, and engages in extortion, fuel theft, and territorial warfare that has left thousands dead. His elimination represents the most significant decapitation strike against Mexican organized crime since the recapture of Joaquín "El Chapo" Guzmán a decade earlier.
The operation's success, however, unleashed immediate and coordinated retaliation. Within hours, CJNG-affiliated cells erected hundreds of road blockades—frequently involving torched trucks, buses, and passenger vehicles—across at least 20 of Mexico's 32 states. Gunmen set fire to businesses, gas stations, and public infrastructure; ambushed security patrols; and clashed with National Guard and army units. In Jalisco alone, authorities reported at least 25 National Guard members killed in retaliatory attacks, with dozens more civilian and criminal casualties. Similar violence erupted in Michoacán, Colima, Guanajuato, Nayarit, Tamaulipas, and other western and central states where the cartel holds sway. Air travel to tourist hubs like Puerto Vallarta faced cancellations and delays, while trucking associations advised drivers to seek shelter rather than risk highways.
Jalisco Governor Pablo Lemus Navarro declared a statewide "red alert," suspended in-person classes for Monday, urged residents to remain indoors, and halted public transportation in major cities including Guadalajara. The state government activated emergency protocols, deploying additional military and police reinforcements to clear blockades and restore order. By Monday afternoon, Mexican President Claudia Sheinbaum reported that more than 90% of blockades had been dismantled, crediting unified federal-state coordination. In a public message, she reiterated calls for calm while affirming that "activities are proceeding normally throughout most of the country" and that her administration works daily "for peace, security, justice, and the well-being of Mexico."
Trump's Monday post reflects long-standing US frustration with cartel violence spilling across the border, particularly the flow of fentanyl that has fueled the American opioid crisis. Since returning to office in January 2025, the administration has intensified pressure on Mexico through tariff threats, border security demands, and terrorist designations, while also pursuing closer intelligence and operational collaboration. Deputy Secretary of State Christopher Landau called Sunday's operation a "great development" for both nations and the region.
Security analysts caution that the "kingpin strategy" of targeting top leaders often produces short-term chaos. El Mencho's death could fracture the CJNG into rival factions, intensify internal power struggles, or prompt escalated attacks as successors seek to demonstrate strength. While the strike weakens one of Mexico's most dangerous organizations, it also underscores the resilience and adaptability of cartel structures in the face of high-profile losses.
As violence gradually subsides and forensic teams complete identification procedures, attention turns to next steps: potential follow-on operations against remaining CJNG leadership, strengthened bilateral mechanisms to interdict precursor chemicals, and measures to protect communities caught in the crossfire. For now, the killing of El Mencho stands as a landmark moment in the fight against transnational organized crime, even as the immediate aftermath highlights the enduring challenge of restoring stability in cartel-dominated regions.
