LOS ANGELES, CA (Catholic Online) - Wachovia, currently owned by Wells Fargo, settled out of court for the largest violation of the Bank Secrecy Act in U.S. history in 2010, paying a fine of $160 million for laundering a staggering $378.4 billion from Mexican currency exchange houses between the years 2004 and 2007.

The majority of the cash is believed to be drug money, moved without proper documentation from Casa's de Cambio in Mexico to U.S. banks.

"There was no consequence for anyone dealing with that money. Some other compliance officers broke the rules and they kept their jobs. I obeyed all the rules, blew the whistle and lost my job," Woods says.

This is a side of the Mexican drug war that few people see. Ever since Mexican President Felipe Calderon used his nation's military against the drug cartels, an estimated body count has soared past 50,000 people dead.

Public beheadings have become commonplace and the cartels have brazenly gunned down unarmed civilians in public. Financial analysts, then say there is no exaggeration in accusing bankers of laundering blood money for international assassins.

"The whole point of being a drug dealer is money," Heather Lowe, a Washington-based lawyer with Global Financial Integrity says. "Identifying and stopping that money flow is crucial."

The U.N. Organization on Drugs and Crime estimates that illegal narcotics represent the world's third-biggest export, after oil and the arms trade, worth more than $300 billion annually.

"You have these horrendous crimes being committed, people being shot 10, 20 or 30 at a time," Walter MacKay, a former Canadian police officer who has trained Mexican security forces says. "This dirty money washing through economies just exacerbates everything," he told Al Jazeera.

Illicit drug sales in the United States generate annual revenues between $18 billion and $39 billion, according to the U.S. Justice Department's Federal Bureau of Investigation. The money in turn flows back into Mexico, where cartels use it to pay underlings, bribe politicians, invest in legitimate businesses and purchase raw product.

Most tragically, the "war on drugs" doesn't seem likely to end anytime soon. Many analysts believe the military solution isn't working as violence is increasing. Some policy experts and forensic accountants believe tracking money earned by cartels, along with waging a PR campaign to tackle the demand side of the equation in the U.S., is the best in a series of bad options.

"In order to weaken organized crime, it is far safer and more effective in the long run to erode its financial base," Laura Carlsen, director of the Americas program of the International Relations Centre in Mexico City says.

Currency exchange houses, like the ones used by Wachovia, are probably the most common way for cartels to launder funds. Traffickers normally "contract with money brokers to use their networks of bank accounts and business connections to structure large sums for transport across the border"; former Arizona Attorney General Terry Goddard told a gathering at Woodrow Wilson Center said.

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