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.

What I write about is how much influence it's had in things like state legislatures and governorships and congressional races. The other thing that's even more important in the long run is that very extreme money has affected the ecosystem of ideology in the country.

There are some areas where the Kochs are on the same page with [Donald] Trump. He doesn't believe in global warming. He says it's a hoax .

Barack Obama was elected President in 2008 and re-elected in 2012. The natural thing would be to suggest money on the right [wing] doesn't really matter that much. The first thing you have to know is that the presidential elections are the ones where it's most difficult for money to hold sway, in that they're the most public elections.

It was our view of the worst that could befall our people if they were taken captive. So, what was fascinating to me was that somehow it appears the techniques that we have feared most in the world would be used on our people, we are using on people in our custody.

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

There's not as much big money on the left, but you've got George Soros, who has the Open Society Institute. He's pushing liberal policies.