Let's face it, the subject of campaign finance is not always scintillating. But it's incredibly important.

One of the oddities of this election is the man that [Donald] Trump chose as his vice-president, Mike Pence, is one of the Kochs' favourite politicians.

The book that I wrote is called Dark Money, and it's about secret spending that is very hard to follow. [George] Soros's whole thing is about government transparency, so he spends very much in the open, and the same with [Tom] Steyer.

In fact, Charles Koch tried to get [Mike] Pence to run for the White House in 2012.

The concern that I have is that, as wealth continues to concentrate in the hands of a few, economic inequality grows, and power also becomes more unequal.

[The Kochs] they hate big government.

[Donald] Trump has put forward a list of people he would like to see on the Supreme Court, whom the Kochs would be very happy with too. So it's not all bad for them.