3. Edwin Fujinaga, Junzo Suzuki and Paul Suzuki - $1.5 billion
The three Japanese nationals were indicted by a grand jury in 2015 for operating a Ponzi Scheme that netted over $1.5 billion from unsuspecting victims in Japan and the United States.
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They operated a company called MRI International out of Las Vegas, claiming to collect medical accounts from people at a discount. However, they would then use these details to collect full amounts from different insurers all over the country. They were also found to have committed mail fraud, money laundering, and wire fraud.