Mexican National Pleads Guilty in Multimillion-Dollar Trade-Based Money Laundering Scheme

-Editorial 

A Mexican national pleaded guilty to participating in a two-year, multimillion-dollar trade-based money laundering conspiracy that moved drug trafficking proceeds from the United States to Mexico, federal authorities said.

According to court documents, Gabriel Arturo Castillo, 52, of Monterrey, Nuevo León, admitted to taking part in a sophisticated international operation designed to transfer profits from illegal drug sales in the United States to Mexico-based cartels without physically transporting bulk cash across the border.

Prosecutors said the scheme relied on a trade-based money laundering system commonly referred to as a black-market peso exchange. The method allowed conspirators to disguise the origin of illicit proceeds by channeling funds through commercial transactions involving goods purchased in the United States and resold in Mexico.

Authorities said the conspiracy received large quantities of U.S. currency derived from drug trafficking activities in multiple cities across the country. The cash was either deposited into bank accounts controlled by members of the organization or transported to Laredo, Texas, a key hub in the operation.

From Laredo, the U.S. currency was sold to business operators in Mexico. Those individuals used the funds to purchase goods from American retailers, including perfume wholesalers and other consumer product vendors. After the transactions were completed, the merchandise was transported across the border into Mexico, where it was sold at a predetermined price.

Investigators said the final step in the scheme involved Mexican business operators transferring payments in pesos to drug trafficking organizations in Mexico. This process enabled cartel members to receive proceeds in local currency while concealing the illicit origin of the funds and avoiding scrutiny associated with cross-border cash smuggling.

Federal officials said the operation functioned as a financial pipeline that supported narcotics trafficking organizations by providing a reliable method to repatriate profits. Authorities added that such schemes can undermine legitimate commerce by injecting illicit funds into lawful markets.

Castillo pleaded guilty to one count of conspiracy to commit money laundering. He is scheduled to be sentenced on July 7 in federal court and faces a statutory maximum sentence of 20 years in prison. His sentence will be determined by a U.S. district judge after consideration of the U.S. Sentencing Guidelines and other statutory factors.

The case is being investigated by the Drug Enforcement Administration and the Internal Revenue Service Criminal Investigation Division, which traced the movement of funds and commercial transactions tied to the conspiracy.

Prosecutors from the Justice Department’s Criminal Division, including attorneys assigned to the Money Laundering, Narcotics, and Forfeiture Section, are handling the case alongside assistant U.S. attorneys from the Southern District of Texas. 

Castillo was arrested in Mexico and extradited to the United States in August 2025 with the assistance of U.S. and Mexican law enforcement partners. The investigation remains ongoing, and officials indicated that additional individuals involved in the scheme could face charges.