Structuring
In the United States, the Bank Secrecy Act says people must write the government currency transaction reports (CTRs) if they buy, sell, or deposit money worth $10,000 or more.  This is either in USD or any money from any other country. Financial institutions, for example banks, that think someone might be smurfing have to tell the government about it.  They file a suspicious activity report (SAR). In 1986, the U.S. Congress passed a new part of Title 31 of the United States Code: