MEXICO CITY, February 24, 2025 – A sweeping foreign aid freeze ordered by U.S. President Donald Trump has stalled a United Nations program in Mexico aimed at stopping the flow of imported fentanyl precursors into the country’s drug cartels, according to several sources familiar with the matter.

he initiative, part of the UN Container Control Programme - a joint effort by the United Nations Office on Drugs and Crime and the World Customs Organization - provided Mexico’s Navy with specialized training and equipment to enhance cargo screening at the Port of Manzanillo, the nation’s busiest container port. The program, launched in 2023 with approximately $800,000 in U.S. funding, was also scheduled to expand to two additional ports, Lázaro Cárdenas and Veracruz, this month. However, the funding cut has forced authorities to put these plans on hold.

The Port of Manzanillo has long been a hotspot for drug traffickers, who smuggle Chinese chemical precursors through the port to supply clandestine labs producing synthetic opioids and methamphetamine. Despite the UN program’s reported success - in one instance, training efforts led to the seizure of nearly 90 tons of meth ingredients in July 2024 and another 25 tons in December - further donations of cargo scanners, drug-testing equipment, and additional training are now suspended.

The freeze is one of several U.S. counternarcotics efforts in Mexico that have been disrupted by Trump’s abrupt halt on foreign aid, which was ordered on January 20. Other affected programs include U.S. training initiatives aimed at dismantling clandestine fentanyl labs and the provision of drug-sniffing canines to Mexican authorities.

While the Trump administration has issued waivers to resume funding for certain security programs worldwide - including $7.8 million in projects by the State Department’s Bureau of International Narcotics and Law Enforcement Affairs (INL) in Mexico - most of INL’s roughly $50 million budget dedicated to disrupting the fentanyl supply chain remains frozen. The UN Container Control Programme, however, has not yet received a waiver.

Enrique Roig, a former senior State Department official, warned that halting these programs could undermine U.S. efforts to reduce fentanyl overdose deaths. “Stopping all these programs at this moment, I just don't see how this is going to have a positive impact on reducing the numbers of fentanyl deaths in the U.S.,” he said.

The funding freeze comes amid an ongoing crisis fueled by the illicit trade of fentanyl - a synthetic opioid linked to more than 450,000 American deaths over the past decade. The crisis is driven largely by a shadowy supply chain for precursor chemicals, smuggled into North America by air and sea, then synthesized into finished fentanyl in Mexico.

In addition to its operations at seaports, the UN has been in talks with Mexican authorities to launch a similar cargo screening program at airports under the AIRCOP initiative at Mexico City’s Benito Juárez airport. However, this expansion is also at risk due to the current funding freeze.

The disruption of these anti-narcotics programs marks a significant setback in U.S. efforts to combat the opioid crisis. Trump’s administration has repeatedly emphasized the need to secure the U.S. border and cut federal spending, but critics argue that curtailing support for key security initiatives may ultimately exacerbate the challenges posed by illegal drug trafficking.

White House Deputy Press Secretary Anna Kelly did not comment on the decision to halt funding, while Mexican officials have yet to respond to inquiries regarding the status of the UN programme. Meanwhile, the broader implications of the aid freeze continue to stoke debate over the effectiveness of U.S. policies aimed at curbing transnational drug trafficking.

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