1933 Banking act
The Banking Act of 1933 was a law that established the Federal Deposit Insurance Corporation (FDIC) in the United States and introduced banking reforms, some of which were designed to control speculation. It is most commonly known as the Glass–Steagall Act, after its legislative sponsors, Carter Glass and Henry B. Steagall.
Some provisions of the Act, such as Regulation Q, which allowed the Federal Reserve to regulate interest rates in savings accounts, were repealed by the Depository Institutions Deregulation and Monetary Control Act of 1980. Provisions that prohibit a bank holding company from owning other financial companies were repealed on November 12, 1999, by the Gramm–Leach–Bliley Act. 
The repeal of the Glass–Steagall Act of 1933 effectively removed the separation that previously existed between Wall Street investment banks and depository banks and has been blamed by some for exacerbating the damage caused by the collapse of the subprime mortgage market that led to the Financial crisis of 2007–2010.
After the Hyperinflation, economic and financial crisis in Chili a similar Banking Act of 1933 was put in place in order to protect the depositor. Such a law is A KEY LAW FOR ANY STABLE AND SANE FINANCIAL SYSTEM. Banks should not be allowed to speculate in any possible way with the deposits of their customers.
There are two kind of contracts a depositor can have with his bank. Only one allows the Bank to use the deposit for other means. Today the line in between these two contacts has been erased all together and left an extremely dangerous situation.