cryptogon.com

The agents, primarily with the Drug Enforcement Administration, have handled shipments of hundreds of thousands of dollars in illegal cash across borders, those officials said, to identify how criminal organizations move their money, where they keep their assets and, most important, who their leaders are.

They said agents had deposited the drug proceeds in accounts designated by traffickers, or in shell accounts set up by agents.

The officials said that while the D.E.A. conducted such operations in other countries, it began doing so in Mexico only in the past few years. The high-risk activities raise delicate questions about the agency’s effectiveness in bringing down drug kingpins, underscore diplomatic concerns about Mexican sovereignty, and blur the line between surveillance and facilitating crime. As it launders drug money, the agency often allows cartels to continue their operations over months or even years before making seizures or arrests.

Agency officials declined to publicly discuss details of their work, citing concerns about compromising their investigations. But Michael S. Vigil, a former senior agency official who is currently working for a private contracting company called Mission Essential Personnel, said, “We tried to make sure there was always close supervision of these operations so that we were accomplishing our objectives, and agents weren’t laundering money for the sake of laundering money.”

Another former agency official, who asked not to be identified speaking publicly about delicate operations, said, “My rule was that if we are going to launder money, we better show results. Otherwise, the D.E.A. could wind up being the largest money launderer in the business, and that money results in violence and deaths.”

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Today, in operations supervised by the Justice Department and orchestrated to get around sovereignty restrictions, the United States is running numerous undercover laundering investigations against Mexico’s most powerful cartels. One D.E.A. official said it was not unusual for American agents to pick up two or three loads of Mexican drug money each week. A second official said that as Mexican cartels extended their operations from Latin America to Africa, Europe and the Middle East, the reach of the operations had grown as well. When asked how much money had been laundered as a part of the operations, the official would only say, “A lot.”

“If you’re going to get into the business of laundering money,” the official added, “then you have to be able to launder money.”

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