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William Miller, 88, relaxes at his home in La Habra, Calif., in 2008. Mr. Miller is among 1,800 people spread across 25 states who lost roughly $190 million in a scam that took money from new investors to pay off people who had pumped in cash earlier. Unbeknownst to Mr. Miller and other investors, most of whom were senior citizens, their money was being used to support a Ponzi scheme. (Associated Press)

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