The Koch brothers are among the best-know politically active families in America. The billionaires' network of political action committees and advocacy groups will spend $300 million on the 2016 campaign. Anthony Mason spoke with Charles Koch in a rare television interview, ahead of the release of his book, "Good Profit."
![](https://i.ytimg.com/vi/2d_yCbdwrQU/mqdefault.jpg)