There is an ongoing federal investigation into Mayor de Blasio's nonprofit Campaign One for New York; continual evidence shows the conflict of interest.

"So more than two years later, NY1 examined all of the donations to the Campaign for One New York, which is now the subject of a federal investigation. We found that at least 60 donations came from an entity that had business with the city, or a company that was directly lobbying the city or was a union with a city contract.

"In some cases, action by the de Blasio adminsitration occurred within days or months of the donation. For instance, the city's health care workers' union SEIU Local 1199 gave $250,000 in March of 2014. Three months later, the union signed a new city contract."--Courtney Gross, NY1