[Related to the Making the Connection] An article in the New York Times observed that "the Glass-Steagall Act... forced the separation of investment banking from commercial banking..." And: "Glass-Steagall aimed to protect the common folk who deposited money in their banks for safekeeping...." Source: Andrew Ross Sorkin, "One Thing Both Parties Want To Break Up the Banks Again," New York Times, July 25, 2016. In separating commercial banking from investment banking, what was Congress's main goal?