President Donald Trump told the world Tuesday that Mexico is becoming a “epicenter” of cartel violence, and he made clear he expects Mexico to stop it. Speaking at the UN General Assembly, Trump said the U.S. would use its “unmatched military might” to defend its interests in the Western Hemisphere if Mexico’s government does not reclaim territory held by criminal groups.
As the Shield of the Americas was launched, a U.S.-led coalition aimed at drug cartels, President Trump pressed coalition partners to work together against 24 criminal organizations throughout the region, naming eight Mexican groups among them, including the Sinaloa Cartel, Jalisco New Generation Cartel, and Los Viagras. The coalition’s stated plans include asset freezes, visa restrictions, and penalties for giving material support to the groups.
On Wednesday, Mexican President Claudia Sheinbaum pushed back against the criticism, noting that her country could complain about having to live next door to a nation with high levels of illicit drug consumption and weapons production. She also pointed out that Trump had praised bilateral ties and that both governments continue working together on security.
A public disagreement over who holds the power in the relationship is marked by the exchange. Mexico frames cartels as a threat crossing the border from the United States, while the United States sees the problem as one that requires Mexican action on drugs, guns and money.
Trump’s Warning at the UN
Trump’s speech at the UN General Assembly was blunt. He said it is unacceptable for the U.S. to share a 2,000-mile border with a territory controlled by enemy cartels. He compared drug cartels to ISIS and said the U.S. was prepared to use its “unmatched military might” to defend its interests in the Western Hemisphere.
“It’s unacceptable for the United States to share a 2,000-mile border with a territory controlled by enemy cartels,” Trump said.
He urged members of the Shield of the Americas to take coordinated action against the 24 criminal organizations. The coalition is U.S.-led, and Mexico has not joined it.
The coalition has made its approach plain: it aims to strike hard at the financial networks that sustain organized crime through asset freezes, deny leaders freedom of movement with visa restrictions, and punish those who supply material support by targeting both businesses and individuals who assist the cartels.
Sheinbaum Pushes Back
Mexico could take issue with being neighbors to a nation with high levels of illicit drug consumption and weapons production, Sheinbaum observed. She also pointed out that Trump had praised bilateral ties and that both governments continue working together on security.
The argument reverses the usual roles. It places the blame for Mexico’s troubles partly on American demand for drugs and American production of weapons. This is a notable change from the standard account, in which the U.S. is the aggrieved party and Mexico is the one falling short.
After months of friction between the two governments, Sheinbaum has repeatedly cited national independence during public events. A tally of her appearances since January 2025 reveals over two dozen occasions where she referenced sovereignty, non-subordination or related terminology while addressing ties with the United States.
Different Political Realities
A political scientist at Tecnológico de Monterrey University who studies criminal governance and peacebuilding says the two governments are operating from different political realities when it comes to security. A senior Mexico analyst at the International Crisis Group says Washington’s repeated claim that Mexico is “not doing enough” has hardly shifted since Trump came back into office.
Peña’s observation captures the core of the dispute. The U.S. operates from a position of strength and confidence. Mexico operates from a position of vulnerability and caution. Each side sees the other’s actions as evidence of the other’s weakness.
Military Cooperation Continues
Despite the public disagreement, military cooperation between the two countries continues. Mexico’s Senate this month authorized 139 armed members of the U.S. Army’s 101st Airborne Division to enter Chihuahua for joint training requested by Sheinbaum’s government.
In March, the binational anti-drone program was tested along the Texas border between El Paso and Ciudad Juárez. By late August, U.S. troops had employed a high-energy laser system to take down three drones in Texas’s Rio Grande Valley.
This year, Northern Command’s border task force has disabled more than 300 drones, with over 100 of them taken down in August alone.
| Event | Location | Date |
|---|---|---|
| 101st Airborne authorization | Chihuahua | This month |
| Anti-drone pilot | El Paso-Ciudad Juárez | March |
| Laser shot-down | Rio Grande Valley | Late August |
| Drone neutralizations | Border task force | So far this year |
The Sinaloa Case
Beyond the talk, the coalition is taking action. In April, U.S. prosecutors charged Sinaloa Gov. Rubén Rocha Moya alongside nine other current and former officials with drug-trafficking and weapons offenses. Rocha denies the accusations, which remain allegations.
Though Sheinbaum said the measures were preventive rather than the result of a Mexican criminal investigation, Mexico has frozen accounts tied to former officials mentioned in the U.S. case.
The Trade Relationship
The disagreement is occurring at a sensitive point for the wider bond between the two nations. Some 80% of Mexico’s goods cross into the U.S., and the two countries continue to work out terms on taxes on cars, metal and building materials, along with the fate of the North American trade deal.
The commerce tie holds the two nations together. Without it, the military alliance rests on nothing more than a business deal. Both sides understand this, which explains why Sheinbaum can speak out against U.S. pressure in public while quietly working with Washington behind closed doors.
What the Disagreement Means
What makes this disagreement stand out is how seldom it happens. When leaders from these two nations address each other, they usually talk in general terms about working together and common aims. Here, by contrast, each side is speaking directly to the world’s watching audience, stating its position without pulling any punches.
The argument centers on who gets to define the story and who determines what comes next. Trump wants to present Mexico as a country that has failed and needs American assistance. Sheinbaum, for her part, wants to position the United States as a partner that should step up and do its share.
The Bottom Line
Mexico’s president and America’s are not speaking to each other directly. One warns of cartels from across the border; the other points at how the United States itself acts. Both seem set on their present path, and neither appears ready to move from it.
The coalition’s effort goes on. Drones will be shot down. Accounts will be frozen. Leaders will be kept from traveling. What remains uncertain is whether this difference of opinion points to a more serious rift within the alliance or merely reflects the usual friction between partners.
The authors hold the second view. In their opinion, the United States and Mexico are not splitting apart because of cartels. Instead, they are locked in an argument over who should be held responsible, and that disagreement shows strength, not frailty.
Where the paper stands
The paper backs Mexico’s right to reclaim its own territory and is against the U.S. using its “unmatched military might” as a threat to do so. The coalition’s stated plans of asset freezes, visa restrictions, and penalties for material support are real tools, but they should not be wielded as threats.
The paper supports the deal over the standoff, and that means keeping the channels open for trade, diplomacy and compromise. Mexico has not joined the coalition, and its president has repeatedly cited national independence during public events — over two dozen occasions since January 2025. That is a legitimate posture for a sovereign state.
The dispute centers on who gets to define the story and who determines what comes next. Trump wants to present Mexico as a country that has failed and needs American assistance. Sheinbaum wants to position the United States as a partner that should step up and do its share.
Source material: “The U.S. and Mexico aren’t breaking up over cartels. They’re arguing over who’s to blame.,” Houston Public Media.
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