A monolithic corruption scandal is unfolding between the US and Mexico as prosecutors attempt to decapitate the many tentacles attached to the notorious Sinaloa drug cartel.
In recent years, US efforts against the Sinaloa cartel have expanded well beyond traditional law enforcement into a coordinated campaign that targets everything from its leadership, finances and the broader system that sustains the group.
US authorities have now made another bold step in charging Sinaloa Governor Ruben Rocha Moya and nine other current and former Mexican officials with participating in a conspiracy to help the cartel traffic drugs into the US.
The indictment alleges Rocha accepted bribes and electoral support from the cartel in exchange for allowing it to operate freely once he took office in 2021. Prosecutors say the arrangement enabled the flow of “massive amounts” of fentanyl, heroin, cocaine and methamphetamine into the US, generating “millions of dollars in drug money.”
It is one of the most serious corruption cases brought by Washington against a sitting Mexican official.
US officials had signalled action was coming, with ambassador Ronald Johnson sending out a warning days earlier that “significant action” on corruption in Sinaloa could be imminent.
The indictment now raises broader questions about the depth of cartel influence inside Mexico’s political system, and how far the US is willing to go to confront it amid several other international flashpoints this year.
According to the filing, cartel figures linked to kingpin Joaquín “El Chapo” Guzmán’s sons played a direct role in Rocha’s rise, using intimidation and interference during the election campaign.
Prosecutors allege Rocha and allied officials placed individuals across state institutions who would shield cartel operations, tip off raids and ensure protection from arrest.
Other figures named include a sitting mayor, a senator and senior law enforcement officials. In one example cited, a police commander is accused of receiving regular payments to allow drug shipments to move freely and to share operational intelligence with cartel members.
Rocha has fiercely denied the allegations in a post on social media.
“I categorically and absolutely reject the accusations made against me by the Southern District of New York Federal Prosecutor’s Office, as they lack any truth or foundation whatsoever. And this will be demonstrated, with full force, at the appropriate time,” he said, framing the “attack” as a sleight against his political party.
“This attack is not solely against my person, but against the movement of the Fourth Transformation, its emblematic leaderships, and the Mexican women and men who represent that cause.
“It is part of a perverse strategy to violate the constitutional order, specifically the national sovereignty advocated by Article 40 of the Political Constitution of the United Mexican States, which our movement defends as an invariable and non-negotiable principle.
“To the people of Sinaloa, I say that, with the courage and dignity that characterise us, we will demonstrate the lack of foundation for this slander.”
Cartel’s deep links in Mexico and beyond
There is an extensive pattern of cartel influence inside Mexican government structures, ranging from petty bribery and intelligence leaks to direct political capture.
Some analysts say the culture of corruption within Mexico is omnipresent due to the immense wealth and power of drug kingpins placed throughout the nation.
One of the clearest proven examples is Genaro Garcia Luna, Mexico’s top law enforcement official from 2006 to 2012. He was convicted in the US in 2023 for taking millions of dollars in bribes from the Sinaloa cartel while overseeing the country’s anti-drug war.
Prosecutors showed he used his position to protect cartel operations, leak sensitive intelligence, and even allow police forces to escort drug shipments.
The case is often cited as the most direct evidence of cartel penetration at the highest levels of the Mexican state.
There are also multiple cases at the state and local levels. Former Nayarit governor Roberto Sandoval and his lawyer general Edgar Veytia were both accused of taking cartel bribes in exchange for protection, while earlier investigations into the Gulf cartel uncovered a “bribe notebook” detailing payments to senior federal police commanders and judicial officials.
Veteran Mexico-based journalist Ioan Grillo, who has spent years reporting on the country’s drug war, has long argued that cartel power in Mexico cannot be understood as separate from the state.
“For decades, Mexico had a system where traffickers operated under the protection of politicians and police,” he said while promoting his book El Narco.
He describes a structure in which corruption was totally embedded. In his view, “it wasn’t that the state was absent — it was that parts of the state were working with criminals”.
“When Mexico began to democratise, that system broke down and the violence exploded,” he said.
The legacy remains visible in areas where “cartels have penetrated police forces, local governments and even federal institutions,” and in some regions, “the cartel is the authority.”The latest charges land at a sensitive moment for President Claudia Sheinbaum, whose government has prioritised tackling cartel violence but has largely focused on criminal networks rather than elected officials.
Rocha, a long-time political figure and ally within the ruling Morena party, had previously been publicly supported by senior figures in the movement.
US wants to ‘wage war’ on cartels
Under US President Donald Trump and his many allied policymakers, the idea has moved from fringe to mainstream debate. Trump himself has publicly floated the possibility of using US military power to “wage war” on cartels, particularly in response to fentanyl trafficking.
The first major operation could be seen in the clinical removal of Nicolas Maduro from Venezuela earlier this year, where the military’s feared “Delta Force” unit kidnapped and exfiltrated the corrupt leader back to the US in a matter of hours.
The key lies in the definition of cartels under US law. There are pushes to label them terrorist organisations, which would essentially expand legal authority for more military-style operations, including potential cross-border action.
Proposals in Congress have explicitly called for authorising the use of force against cartels, which could open the door to targeted strikes or special operations missions, with figures like Dan Crenshaw and Lindsey Graham backing resolutions aimed at treating cartels as national security threats, not just criminal networks.
But those ideas face major obstacles in Mexico. The government has consistently rejected any suggestion of US military intervention on its territory, framing it as a violation of sovereignty.
