Former Citigroup chairman and chief executive Sandy Weill thinks Wall Street should break up its big banks in an effort to regain the public's trust.
"What we should probably do is go and split up investment banking from banking," Weill said on CNBC's "Squawk Box" on Wednesday. "Have banks be deposit takers, have banks make commercial loans and real estate loans, have banks do something that's not going to risk the taxpayer dollars, that's not too big to fail."
Weill essentially called for the return of the Glass—Steagall Act, CNBC said. According to Investopedia, the 1933 act separated investment and commercial banking activities in the wake of a stock market crash and bank failure. It was repealed in 1999 during the Clinton administration.
"I'm suggesting that they be broken up so that the taxpayer will never be at risk, the depositors won't be at risk, the leverage of the banks will be something reasonable, and the investment banks can do trading," Weill said.
The 79-year-old Wall Street legend also called for complete transparency in the banking industry. "There should be no such thing as off balance sheet," he said. "I want to see us be a leader, and what we're doing now is not going to make us a leader."