International AML situation  After the mid-20th century, governments around the world were confronted with the grave situation where the flooding of narcotics became a scourge, and they conducted in-depth examination on the legal policies of preventing narcotics-related crimes. In 1970, the United States passed the Bank Secrecy Act (BSA).
BSA reformed on the traditional bank secrecy system, built up the AML foundation in the US and instituted the AML working system led by one government department and participated by various others. Meanwhile, AML was paid much attention by the majority of Western developed economies and emerging economies. During 1980s-1990s, these countries and regions have successively enacted AML laws.