A woman named Carleen Noreus ran a massive diploma mill in South Florida, selling nearly 3,000 fake nursing diplomas for around $25 million over seven years to people who never completed the required training.

The scam, uncovered as part of the larger federal Operation Nightingale, allowed more than 2,200 unqualified "graduates" to pass licensing exams and work as nurses across the country, endangering patients until her recent guilty plea on wire fraud and money laundering charges.