The Bank Secrecy Act of 1970 (BSA), also known as the Currency and Foreign Transactions Reporting Act, is a U.S. law requiring financial institutions in the United States to assist U.S. government agencies in detecting and preventing money laundering. Specifically, the act requires financial institutions to keep records of cash purchases of negotiable instruments, file reports if the daily aggregate exceeds $10,000, and report suspicious activity that may signify money laundering, tax evasion, or other criminal activities. The Bank Secrecy Act of 1970 (BSA), also known as the Currency and Foreign Transactions Reporting Act, is a U.S. law requiring financial institutions in the United States to assist U.S. government agencies in detecting and preventing money laundering. Specifically, the act requires financial institutions to keep records of cash purchases of negotiable instruments, file reports if the daily aggregate exceeds $10,000, and report suspicious activity that may signify money laundering, tax evasion, or other criminal activities. The BSA is sometimes referred to as an anti-money laundering law (AML) or jointly as BSA/AML. The BSA was originally passed by the U.S. Congress in 1970 and signed by President Richard Nixon into law on October 26, 1970. Shortly after passage, several groups attempted to have the courts rule the law unconstitutional, claiming it violated both Fourth Amendment rights against unwarranted search and seizure, and Fifth Amendment rights of due process. Several cases were combined before the Supreme Court in California Bankers Assn. v. Shultz, 416 U.S. 21 (1974), which ruled that the Act did not violate the Constitution. Until the 1980s, there was a 'prolonged period of inaction', but financial institutions eventually complied with the BSA's reporting requirements. It has been amended several times, including provisions in Title III of the USA PATRIOT Act, which amended the BSA to require financial institutions to establish anti-money-laundering programs by establishing internal policies, procedures, and controls, designating compliance officers, providing ongoing employee training, testing their programs through independent audits. BSA regulations require all financial institutions to submit five types of reports. Individuals must file an individual filing requirement. A currency transaction report (CTR) reports cash transactions exceeding $10,000 in one business day, regardless of whether it's in one transaction or several cash transactions. It is filed electronically with the Financial Crimes Enforcement Network (FinCEN) and is identified as FinCEN Form 112 (formerly Form 104). CTRs include an individual's bank account number, name, address, and social security number. SAR reports, required when transactions indicate behavior designed to elude CTRs (or many other types of suspicious activities), include somewhat more detailed information and usually include investigation efforts on the part of the financial institution to assess the validity or nature of the transactions. A single CTR filed for a client's account is usually of no concern to the authorities, while multiple CTRs from varying institutions or a SAR suggest that activity may be suspicious. A suspicious activity report (SAR) must report any cash transaction where the customer seems to be trying to avoid BSA reporting requirements by not filing CTR or MIL, for example. A SAR must also be filed if the customer's actions suggest that he is laundering money or otherwise violating federal criminal laws and committing wire transfer fraud, check fraud, or mysterious disappearances. The bank should not let the customer know that a SAR is being filed. These reports are filed with FinCEN and are identified as Treasury Department Form 90-22.47 and OCC Form 8010-9, 8010-1. This requirement and its accompanying implied gag order was added by the Annunzio-Wylie Anti-Money Laundering Act § 1517(b) (part of the Housing and Community Development Act of 1992, Pub.L. 102–550, 106 Stat. 3762, 4060). A financial institution is not allowed to inform a business or consumer that a SAR is being filed, and all the reports mandated by the BSA are exempt from disclosure under the Freedom of Information Act.