U.S. prosecutors have charged more than 400 people with taking part in healthcare fraud and opioid scams that totaled $1.3 billion in false billing. Gen. Jeff Sessions announced the charges Thursday. Officials say those charged include more than 120 people involved in prescribing and distributing narcotics. In prepared remarks, Sessions calls it the "largest healthcare fraud takedown operation in American history." Among those charged are six Michigan doctors accused of a scheme to prescribe unnecessary opioids.

They were accused of submitting false claims for reimbursement for dates and times they'd provided care for qualifying children. The children qualified for federal help under the Child Care and Development Fund Program. To quality they have to be under 13 or up to 19 if physically or mentally incapable of caring for themselves, plus live with family members who qualify for the program financially and are working or attending job training or school.

Epstein was charged last year with committing mail fraud to obtain more than $50 million in money and property from various businesses, schools, churches and nonprofit groups through the fraudulent sale of light bulbs and cleaning supplies.

Investigators say the operator of Rosewood Consulting LLC in Baltimore, Ohio, falsely told investors he was a former Navy Seal and international businessman. Authorities say he told at least 44 investors between July 2011 and June 2013, their money would go into historical bonds issued by China and the exchange of illegal currency from Bougainville, Papua New Guinea, into U.S. dollars.

Although prosecutors say "well in excess" of $100 million was invested, it's unclear how much of that was lost. Rumors have swept affluent Mississippi circles in recent days, with some people denying involvement. D. Patrick Franklin, the chief operating officer of investment advisory firm Pinnacle Trust, says that company had some clients who had loaned money to Adams and his Madison Timber companies more than seven years ago, but that Pinnacle stopped doing business with Adams.