Hillary Clinton Calls for Scrutiny of 'Questionable' Trump Foundation Dealings in Light of IRS Fine

Hillary Clinton also tells ABC News she's proud of her family's foundation.

But Trump, in the sky over Ohio aboard his private plane, told reporters the same day that he never spoke to Bondi and, in response to the criticism of Trump University, said, "Many of the attorney generals turned that case down because I'll win that case in court."

Former Trump University enrollees have sued the now defunct real estate training program for using misleading marketing tactics, which he has repeatedly denied.

Trump added that he has known Bondi for years and has "a lot of respect for her as a person."

Bondi has reportedly denied dropping any investigation during the time her office was contemplating whether to join a New York probe of Trump University. "I never, nor was my office, investigating him. Never. I would never lie. I would never take money. I've been obviously devastated over this," she said in a voice mail message that The Tampa Bay Times said she left with one of its reporters in June.

But Clinton is unconvinced. "There's so many things that are questionable about that, and the IRS certainly thought so and said it was illegal and fined Trump for that set of facts," she told reporters on her campaign plane Monday after her interview with ABC News.

Clinton encouraged people to contrast the work of the Clinton Foundation with the activities of the Trump Foundation, which her spokeswoman, Jennifer Palmieri, has called "an actual pay-to-play scandal."