Bret Baier brought us a sneak preview of tomorrow night's "Fox News Reporting" special that examines the bombshell claims made in the new book Clinton Cash

The book by Peter Schweizer is said to claim that foreign entities donated to the foundation and paid former President Bill Clinton high-dollar speaking fees in exchange for favors from the State Department.

The New York Times reported this morning on the sale of a uranium company to Russia, which raises questions about the role of Clinton's State Department and donations to The Clinton Foundation.

(Read more details at

Hillary Clinton's campaign has pushed back in recent days, characterizing the book as a political "attack" to damage her presidential candidacy. 

Bret talked to Martha MacCallum this morning about the special, saying this story about the uranium company is just one example of what you'll see in the highly anticipated hour. 

"We have many, many more stories. Not just this Kazakhstan story. Of Clinton's speeches, multi-million dollar donations to the Clinton foundation. This really, literally, is the tip of the iceberg. As you can see, you have to follow it. But once you get there, it raises a lot of questions," said Baier.

The Clinton campaign has denied today that the new report shows any evidence of "undue influence" being exerted by Clinton.

"No one has produced a shred of evidence that Hillary Clinton ever took action as Secretary of State in order to support the interests of donors to the Clinton Foundation," said campaign spokesman Brian Fallon in a statement.

"To suggest the State Department, under then-Secretary Clinton, exerted undue influence in the U.S. government’s review of the sale of Uranium One is utterly baseless. It mischaracterizes the nature of the State Department’s participation in such reviews, and also ignores the range of other regulatory agencies that ultimately supported this sale. It is impossible to view this allegation as anything other than just another in the many partisan conspiracy theories advanced in the Clinton Cash book."

Watch the fascinating sneak preview above, as "Clinton Cash" author Peter Schweizer sits down with Bret to lay out the factors at play in the sale of the uranium company.

Don't miss the powerful "Fox News Reporting" special, anchored by Bret Baier, that follows the Clinton money trail. Tune in to "The Tangled Clinton Web," Friday at 10p ET on Fox News Channel. Plus, tweet about it while you watch, using #ClintonCash.