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Highlights: 

• On April 28, 2006, FinCEN issued the attached advisory to U.S. financial institutions about a potential money laundering threat concerning the smuggling of U.S. currency into Mexico and the potential misuse of relationships with U.S. financial institutions by certain Mexican financial institutions, including Mexican casas de cambio. 
• U.S. law enforcement has observed a dramatic increase in the smuggling of bulk cash proceeds from the sale of narcotics and other criminal activities from the United States into Mexico. 
• FinCEN, the Department of the Treasury, the Bureau of Immigration and Customs Enforcement, and the Drug Enforcement Administration have identified various activities that may be associated with this currency smuggling trend. 
• FinCEN issued the attached advisory to assist U.S. financial institutions in complying with their obligations under the Bank Secrecy Act. This advisory does not mean that U.S. financial institutions should curtail business with currency exchangers or other money services businesses. 
• Please distribute this information to the appropriate personnel in your institution. 

Distribution: 
�౦��Ϸ����-Supervised Banks (Commercial and Savings) 

Suggested Routing: 
Chief Executive Officer 
BSA Compliance Officer 

Note: 
�౦��Ϸ���� Financial Institution Letters (FILs) may be accessed from the �౦��Ϸ����'s Web site at www.fdic.gov/news/financial-institution-letters/2006/index.html.
To receive FILs electronically, please visit http://www.fdic.gov/about/subscriptions/fil.html.
Paper copies of �౦��Ϸ���� FILs may be obtained through the �౦��Ϸ����'s Public Information Center, 
801 17th Street, NW, Room 100, Washington, DC 20434 (1-877-275-3342 or (703) 562-2200).