They [the Kochs] want free trade and cheap labour. They own the second-largest private company in America, which is a huge multinational corporation. So they are on a different wavelength.

I mean, The New York Times actually had an interesting case recently where they described a detainee who was afraid of the dark, and so he was purposely kept very much in the dark.

David and Charles Koch are pretty much as far right as you can get on the ideological spectrum without falling off. They are far right libertarians, very anti-government, very pro-business, very anti-tax, anti-regulatory, in favour of free markets ruling the day.

Well, they are critics of the Bush administration generally on the human rights record of the administration, and in particular, they are very, very critical of this use of science.

So you've got these regular, middle-class voters who don't hate the government as much as the Kochs do. They're Republicans, but they still want government programs. They want Social Security, they want Medicare. They need it.

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.

I kept thinking maybe in the future editions [of Dark Money] I should sell it along with, like, some kind of, you know, Pepto Bismol or something. I wanted it to read a little bit like a thriller, so that it truly grabbed people.