Was Castro government part of multimillion dollar Medicare money-laundering scam?

McClatchy Newspapers: U.S. Prosecutors Probe Whether Castro Government Was Involved In Medicare Scam
Just two days after alleging that a South Florida man ran a "vast cash-to-Cuba operation," federal prosecutors said they have no proof that the Castro regime is behind a multimillion-dollar Medicare money-laundering scam. But if the crux of a case filed in U.S. District Court is true - that a network of fraudsters funneled tens of millions of Medicare dollars to Havana - experts say there's no way that much cash could wind up in bank accounts in Cuba without the government there knowing it. So does check-cashing agent Oscar L. Sanchez's indictment on a conspiracy to commit money laundering charge offer the first shred of substantiation to the long-held theory that the Castro brothers pull the strings behind elaborate plots to defraud Medicare (Robles, 6/19)?