U.S. Severs Ties With Mexican Banks Enabling China-Fueled Fentanyl Trade

The war on fentanyl is entering a new phase. The U.S. Treasury Department moved decisively on June 25 against several Mexican financial institutions accused of laundering drug money and fueling the fentanyl trade. The weapon of choice? A powerful new authority that allows officials to swiftly sever ties between financial firms in the United States and other countries.

The orders, which take effect September 4, prohibit U.S. financial institutions from sending or receiving funds or cryptocurrency to two commercial banks — CIBanco and Intercam Banco — and the brokerage firm Vector Casa de Bolsa SA. CIBanco and Intercam are the 20th and 25th largest financial institutions in Mexico, with $7 billion and $4 billion, respectively, in assets, while Vector is the country’s ninth largest brokerage firm and manages nearly $11 billion in assets. According to Treasury, these firms “have collectively played a longstanding and vital role in laundering millions of dollars on behalf of Mexico-based cartels and facilitating payments for the procurement of precursor chemicals needed to produce fentanyl.”

Old Fight, New Authority

Drug overdose is the top killer of Americans ages 18 to 44 — and fentanyl and other synthetic opioids are largely to blame. To fight back, Treasury deployed new tools authorized by Congress under the Fentanyl Sanctions Act and the FEND Off Fentanyl Act.

Similar measures, such as section 311 of the USA PATRIOT Act, authorize Treasury’s Financial Crimes Enforcement Network (FinCEN) to designate foreign jurisdictions, financial institutions, or classes of transactions as a primary money laundering concern. However, the new authority — referred to as section 2313a and codified by the amended Fentanyl Sanctions Act — not only applies specifically to money laundering and associated activity linked to the trafficking of fentanyl and other synthetic opioids but also provides for additional restrictions on the transmission of funds to or from any designated financial institution. Additionally, unlike determinations made pursuant to section 311, which require lengthy notice-and-comment periods, FinCEN can apply section 2313a orders without delay. This makes them a faster and more flexible tool.

Diplomatic Rebuke and Derisking Abound

The fast-track approach that makes section 2313a orders appealing may also invite diplomatic and legal challenges in the coming weeks. Mexican authorities reportedly first began investigating the firms in April after receiving notice from the United States that they would be the subjects of pending enforcement actions. While Treasury’s June 25 press release frames the actions as “taken within the broad context of the strong U.S.-Mexico inter-governmental relationship,” the United States ultimately acted unilaterally without reaching investigative consensus with Mexico. The next day, Mexican President Claudia Sheinbaum stated “there is no evidence of money laundering,” signaling clear disagreement with Washington. Although Mexico’s finance ministry issued civil fines against CIBanco and Intercam on June 25, Mexican authorities have offered few clarifying details and have not taken comparable enforcement steps.

Treasury’s action, paired with concerns that CIBanco and Intercam could collapse, appears to be producing a presently low-level yet potentially explosive crisis in Mexico’s banking sector. The country’s banking regulator is now temporarily operating the targeted firms, while institutions across the country are rapidly derisking and cutting ties, thus creating the potential for broader, more significant economic ripple effects. As a measure of last resort, the targeted firms could decide to challenge Treasury’s orders before they take effect in September. FinCEN’s orders were originally slated to take effect on July 21, but FinCEN later announced an extension on July 9 to reflect that the Mexican government is taking certain mitigating steps to address the targeted institutions’ apparent compliance deficiencies.

China’s Backdoor Into the U.S.

As fentanyl continues to ravage American communities, Treasury must not stop at cutting off the Mexican middlemen. FinCEN’s orders highlight how Mexican firms can be “instrumental in processing funds transfers to China-based companies known to have shipped precursor chemicals to Mexico for illicit purposes.” The actions specifically reference “20 China-based companies … known to have shipped precursor chemicals to Mexico for illicit purposes” since at least 2019. Although the companies remain unnamed, Treasury should swiftly move to publicly designate them and the Chinese banks, brokers, and financial intermediaries that enable their operations with economic sanctions.

Max Meizlish is a senior research analyst for the Center on Economic and Financial Power (CEFP) at the Foundation for Defense of Democracies (FDD). For more analysis from Max and CEFP, please subscribe HERE. Follow Max on X @maxmeizlish. Follow FDD on X @FDD and @FDD_CEFP. FDD is a Washington, DC-based, nonpartisan research institute focusing on national security and foreign policy.