With the death of Cleveland billionaire and philanthropist Peter B. Lewis, the push for relaxed U.S. marijuana laws lost its most generous supporter. That's left supporters wondering what comes next.
Lewis, chairman of Progressive Insurance, died Saturday at age 80. Since the 1980s, he had donated an estimated $40 million to $60 million to marijuana law reform including underwriting ballot campaigns, research, political polling and legal defense efforts.
Largely through Lewis' efforts, and those of several other billionaires, 20 states since 1996 have passed medical marijuana laws, 17 have decriminalized the drug and two have passed legalization language.
(Read more: Legal pot industry lights up with new investors)