The repeal of provisions of the Glass–Steagall Act of 1933 by the Gramm–Leach–Bliley Act effectively removed the separation that previously existed between investment banking which issued securities and commercial banks which accepted deposits. The deregulation also removed conflict of interest prohibitions between investment bankers serving as officers of commercial banks. This repeal directly contributed to the severity of the Financial crisis of 2007–2011 by allowing Wall Street investment banking firms to gamble with their depositors' money that was held in commercial banks owned or created by the investment firms



