Billionaire and former New York City Mayor Michael Bloomberg twice compared Social Security to a Ponzi scheme when he was in office, CNN reports, which is a far cry from his current stance as a Democratic presidential candidate.Nowadays, Bloomberg has vowed to to strengthen entitlement programs, but he used to see them as a major hurdle in the effort to shrink the United States' deficit. During appearances on his old radio program "Live from City Hall," which were reviewed by CNN's KFile, Bloomberg made the Ponzi scheme comparison once in 2006 and again in 2009. The latter instance was in relation to Bernie Madoff, who was arrested in December 2008 and later pleaded guilty to a massive Ponzi scheme."I don't know if Bernie Madoff got his idea from there, but if there's ever a Ponzi Scheme, people say Madoff was the biggest' Wrong," Bloomberg said. "Social Security is, far and away."Stu Loeser, a spokesman for Bloomberg, attempted to explain Bloomberg's comments to CNN. "The Social Security Administration itself gives out detailed actuarial tables on when and how payments will exceed income, and the issue needs attention because we're running the cushion between them down," he said. "Mike believes that between now and that time, we will need to boost receipts by raising contributions from those who can best afford it, which is what he'll do as president." Read more at CNN.More stories from theweek.com Israel is the first country to warn its citizens not to travel abroad over coronavirus fears Harvard scientist predicts coronavirus will infect up to 70 percent of humanity CDC: California coronavirus case may be 1st in U.S. without link to traveling abroad Click here to read full news..