The Glass–Steagall Act was a part of the 1933 Banking Act. It placed restrictions on activities that commercial banks and investment banks (or other securities firms) could do. It effectively separated those activities, so the two types of business could not mix, in order to protect consumer's money from speculative use. The Banking Act of 1935 clarified and otherwise amended Glass–Steagall. Over time, private firms and their regulators found novel ways to weaken the barriers envisioned in the legislation. Eventually, the protections became very weak.