Bill Clinton: Our foundation never did anything 'knowingly inappropriate'

The Bill, Hillary & Chelsea Clinton Foundation has drawn scrutiny in recent weeks as former Secretary of State Hillary Clinton campaigns for president in 2016.

A high-profile new book, "Clinton Cash," alleges that Bill Clinton earned speaking fees and contributions to the foundation in exchange for favors from the State Department. The Clintons and their allies, however, have dismissed the book as a collection of partisan conspiracy theories about information that was mostly public already. 

"There has been a very deliberate attempt to take the foundation down," Bill Clinton said on NBC.

Clinton, giving his interview amid a tour of the Clinton Foundation's African projects, also insisted there was nothing wrong with soliciting huge contributions from rich people and foreign countries.

"I don't think there's anything sinister in trying to get wealthy people, and countries that are seriously involved in development, to spend their money wisely in a way that helps poor people and moves them up. I don't think there's anything bad with that," he said. "I think it's good." 

And as far as his own speaking fees are concerned - which reportedly command as much as $500,000 per event - Clinton said he wasn't planning on stopping anytime soon.

"I gotta pay our bills," he said.

Clinton was paid more than $100 million for speeches between 2001 and 2013. According to The Washington Post, at least $26 million of that total came from major Clinton Foundation donors, which the paper said "demonstrates "how closely intertwined Bill and Hillary Clinton's charitable work has become with their growing personal wealth." 

Watch the NBC interview below: