Who Is El Menchito? CJNG Role, Life Sentence, and Forfeiture

El Menchito is Rubén Oseguera González, a U.S.-born co-founder and former second-in-command of Mexico’s Jalisco New Generation Cartel (CJNG), who was convicted in a Washington, D.C., federal court in September 2024 and sentenced in March 2025 to life in prison plus 30 years, with an order to forfeit more than $6 billion in drug trafficking proceeds.¹

Born in San Francisco around 1990, he is an American citizen by birth.² He grew up in Mexico, where his father, Nemesio Oseguera Cervantes (“El Mencho”), built the CJNG into one of the world’s most powerful drug trafficking organizations. By his mid-twenties, prosecutors said, El Menchito was running the cartel’s drug production and distribution alongside his father.¹

His Role in the CJNG

Prosecutors described El Menchito as the cartel’s number two. Evidence at trial showed that between 2012 and 2015 he supervised laboratories that produced more than three million pounds of methamphetamine — over 1,000 metric tons — and that in April 2015 alone he directed the distribution of more than 55,000 pounds of cocaine.³ The government estimated he was responsible for trafficking more than 50 metric tons of cocaine into the United States, with a total drug value above $12 billion.⁴

He was also identified as one of the earliest architects of the fentanyl crisis. Trial testimony showed that in October 2013 he discussed plans to “do it big” with counterfeit oxycodone pills laced with fentanyl, and by 2015 he told associates he was “building an empire with fentanyl.”³

Prosecutors also cast him as an enforcer. Evidence indicated he ordered the killings of more than 100 people and personally murdered at least six, including five men who owed him drug debts and a driver he shot in the head at close range. Intercepted messages showed he once held 13 people captive, releasing one only after that person agreed to manufacture fentanyl pills.³

The 2015 Military Helicopter Attack

The most dramatic episode tied to El Menchito came on May 1, 2015, near Villa Purificación in western Jalisco. A Mexican military Eurocopter Cougar was pursuing a cartel convoy during a federal operation aimed at capturing El Mencho.⁵ According to trial evidence, El Menchito ordered his “Special Forces of the High Command” to attack the aircraft using an Iranian-made rocket-propelled grenade and a .50-caliber belt-fed machine gun. At least six soldiers were killed. Prosecutors put the toll at nine, counting service members who later died of related injuries, with another left permanently disfigured.³

The attack became a centerpiece of the U.S. case, cited repeatedly as evidence of the cartel’s military-grade capabilities and its willingness to wage war against the Mexican state.

Arrests in Mexico and the Fight Over Extradition

El Menchito was first arrested in January 2014 in Zapopan, Jalisco, where Mexican authorities identified him as the cartel’s second-in-command in charge of finances and South American drug purchases.⁶ A judge released him in December 2014 for lack of evidence.⁷

He was arrested again on June 23, 2015, less than two months after the helicopter attack. Prosecutors said he was carrying an assault rifle and a grenade launcher, weapons later shown to the jury engraved with CJNG markings and a distinctive pixel camouflage pattern.³ A federal judge again ordered his release for insufficient evidence, and the attorney general’s office immediately re-arrested him on July 1, 2015, on new charges related to forced disappearances.⁷

From then on he stayed in custody, eventually held in the maximum-security wing of the Cefereso federal prison in Hermosillo, Sonora.⁸²⁹

The U.S. Federal Case and Conviction

A superseding indictment filed on February 1, 2017, charged El Menchito with two counts: conspiracy to distribute five kilograms or more of cocaine and 500 grams or more of methamphetamine for importation into the United States, and using and possessing firearms, including destructive devices, in furtherance of a drug trafficking conspiracy.¹⁰ He pleaded not guilty on February 21, 2020, and the case was assigned to Chief U.S. District Judge Beryl Howell.¹¹ He reached a plea agreement with prosecutors at one point but rejected it in 2023, and the court later barred prosecutors from using his prior plea admissions as evidence at trial.¹²

The two-week trial opened on September 9, 2024. Prosecutors built their case around wiretapped BlackBerry Messenger communications in which El Menchito used handles including “Forrest Gump,” “Ice Man,” and “Billy the Kid.” They introduced photographs of a grenade-launcher-equipped rifle engraved with his nickname and images of the downed military helicopter, and presented evidence that he had procured weapons and training from Russian mercenaries, assembling an arsenal that included .50-caliber sniper rifles and shoulder-fired rocket launchers. Witnesses included a former police chief who had served as El Mencho’s personal bodyguard, former cartel members, and El Menchito’s own uncle.¹²

Two Mexican law enforcement officials testified under pseudonyms. The court had granted a protective order after the government disclosed that since El Menchito’s extradition, two potential government witnesses had been murdered in Mexico, with at least one killed to prevent testimony against him.¹³

Defense attorney Jan Ronis urged jurors to be skeptical of cooperating witnesses, describing the government’s plea-deal system as one of the “underbellies of criminal justice” and arguing that cooperators had powerful incentives to lie.¹² The jury convicted him on both counts on September 24, 2024.³

The Life Sentence and $6 Billion Forfeiture

Sentencing came on March 7, 2025, before Judge Howell. Prosecutor Jonathan R. Hornok asked for two life sentences, one on each count, calling El Menchito a “mass murderer” and the case “a historically severe drug offense.”⁴

Defense attorney Anthony Colombo asked for the mandatory minimum of 40 years, arguing that his client had been recruited into cartel life at age 14 and grew up in “an unstable environment wrought with violence and corruption.” He called El Menchito “both a product and a victim of that environment.”⁴

Howell rejected that framing. “You weren’t a child when you were committing all these crimes, and you won’t be sentenced as a child here,” she told him. She called him a “drug kingpin” and said his actions were “among the most serious that our drug laws are designed to address.” El Menchito declined to address the court. Howell imposed life in prison plus 30 years, to run consecutively, and ordered forfeiture of more than $6 billion in drug trafficking proceeds.⁴¹

Attorney General Pamela Bondi said El Menchito “helped build Cartel de Jalisco Nueva Generacion into a brutal terrorist organization that pumps poison onto our streets.” Acting DEA Administrator Derek S. Maltz described him as “one of the earliest architects of fentanyl trafficking” and “responsible for flooding the country with methamphetamine.”¹

Where He Is Now

Colombo said the defense team would appeal, arguing that the case should have been tried in Mexico rather than the United States.¹⁴ As of early 2026, no further developments in the appeal have been publicly reported.

El Menchito was initially held at a federal prison in Philadelphia before being transferred in October 2025 to ADX Florence, the federal supermax facility in Colorado sometimes called the “Alcatraz of the Rockies.” The facility also houses Joaquín “El Chapo” Guzmán, the former Sinaloa Cartel leader.¹⁵

The cartel’s reach did not end with his imprisonment. In June 2025 testimony to the U.S. Senate Judiciary Committee, DEA Special Agent Matthew Allen said CJNG members had conducted surveillance on DEA agents and witnesses in the United States during the Washington trial. Allen also testified that a key witness in a major CJNG case was executed in Mexico along with the witness’s spouse, and that the daughter of a cooperating witness was murdered shortly after El Menchito’s sentencing.¹⁶

His Family and the CJNG After El Mencho

El Menchito’s prosecution was part of a broader U.S. and Mexican push against the Oseguera family and the CJNG’s financial infrastructure. His sister, Jessica Johanna Oseguera González (“La Negra”), was arrested in Washington on February 26, 2020, days after his extradition, on money laundering and conspiracy charges tied to businesses the U.S. Treasury identified as fronts for cartel proceeds, including the tequila brand Onze Black. She pleaded guilty in March 2021 and served a 30-month sentence at FCI Dublin in California before her release in early 2022.¹⁷

His mother, Rosalinda González Valencia (“La Jefa”), a central figure in CJNG financial operations through her family’s Los Cuinis organization, was convicted in December 2023 on charges related to undocumented financial transactions and released from a federal prison in Morelos in February 2025. Her brother, Abigael González Valencia (“El Cuini”), a Los Cuinis co-founder, was extradited to the United States in February 2025 to face international drug trafficking charges.¹⁸

His father was killed the following year. On February 22, 2026, Mexican special forces backed by the National Guard and military aircraft raided a property in Tapalpa, Jalisco, in an operation supported by a joint U.S.-Mexico intelligence task force. El Mencho was found wounded after a firefight and died aboard an aircraft en route to Mexico City.¹⁹²⁰

El Menchito’s life sentence effectively removed him from any succession discussion. The CJNG’s franchise-style structure, with semi-autonomous regional cells operating under the cartel’s brand, has allowed the organization to continue functioning. In the hours after El Mencho’s death, cartel members erected blockades and set fire to buses and taxis across 20 Mexican states.²¹

1
U.S. Department of Justice. Notorious Violent Mexican Cartel Leader Sentenced to Life Plus 30 Years in Prison
2
ABC 7 Chicago. Son of Chicago’s Most Wanted Fugitive Extradited to US
3
Drug Enforcement Administration. Notorious Mexican Cartel Leader Convicted of International Drug Trafficking
4
Newsday. Ruben Oseguera El Menchito Cartel Sentencing
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Business Insider. Mexico Catch CJNG Jalisco Cartel Gunmen Who Shot Down Army Helicopter
6
BBC. Mexico Arrests Jalisco Drug Cartel Leader
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InSight Crime. Mexico Courts and the Jalisco Cartel Arrest of El Menchito
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Mexico News Daily. Son of Jalisco Cartel Boss Extradited to US
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The Washington Post. Suspected Mexican Cartel Figure Handed Over to US Amid Surge of Extraditions
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GovInfo. USCOURTS-dcd-1-16-cr-00229
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Courthouse News Service. Jalisco Cartel’s No. 2 El Menchito Pleads Not Guilty to US Charges
12
Los Angeles Times. Ruben Oseguera Gonzalez El Menchito CJNG Cartel Leader Son Trial
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GovInfo. USCOURTS-dcd-1-16-cr-00229 – Protective Order
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The Intercept. Ruben Oseguera Gonzalez Jalisco New Generation Cartel Sentencing
15
Latinus. Trasladan al Menchito a ADX Florence en Colorado
16
El País. The DEA Says Jalisco New Generation Cartel Spied on Its Agents in the United States
17
CNN en Español. Las Mujeres del Cártel Jalisco CJNG
18
InSight Crime. Rosalinda González Valencia, Alias La Jefa
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Al Jazeera. The Killing of Mexican Drug Lord El Mencho: How It Unfolded
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Axios. Mexico Cartel Leader El Mencho Drug Lord Killed
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Al Jazeera. Will Mexico’s Jalisco Cartel’s Violent Business Model Survive El Mencho’s Death