This existed from 1933 until 1999 in the original Glass-Steagall Act until greedy bank investors couldn't handle the fact that they were sitting on a huge pile

This existed from 1933 until 1999 in the original Glass-Steagall Act until greedy bank investors couldn't handle the fact that they were sitting on a huge pile of capital that they couldn't gamble with on Wall Street. Depositors will never be safe until that explicit separation of investment and savings deposits is restored.