Missed this:

Just before sunset on April 10, 2006, a DC-9 jet landed at the international airport in the port city of Ciudad del Carmen, 500 miles east of Mexico City. As soldiers on the ground approached the plane, the crew tried to shoo them away, saying there was a dangerous oil leak. So the troops grew suspicious and searched the jet.

They found 128 black suitcases, packed with 5.7 tons of cocaine, valued at $100 million. The stash was supposed to have been delivered from Caracas to drug traffickers in Toluca, near Mexico City, Mexican prosecutors later found. Law enforcement officials also discovered something else.

The smugglers had bought the DC-9 with laundered funds they transferred through two of the biggest banks in the U.S.: Wachovia Corp. and Bank of America Corp., Bloomberg Markets magazine reports in its August 2010 issue.

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Wachovia admitted it didn’t do enough to spot illicit funds in handling $378.4 billion for Mexican-currency-exchange houses from 2004 to 2007. That’s the largest violation of the Bank Secrecy Act, an anti-money-laundering law, in U.S. history — a sum equal to one-third of Mexico’s current gross domestic product.

“Wachovia’s blatant disregard for our banking laws gave international cocaine cartels a virtual carte blanche to finance their operations,” says Jeffrey Sloman, the federal prosecutor who handled the case.

Since 2006, more than 22,000 people have been killed in drug-related battles that have raged mostly along the 2,000-mile (3,200-kilometer) border that Mexico shares with the U.S. In the Mexican city of Ciudad Juarez, just across the border from El Paso, Texas, 700 people had been murdered this year as of mid- June. Six Juarez police officers were slaughtered by automatic weapons fire in a midday ambush in April.