How the Koch brothers turned into political power brokers

Aired: 1/28/2015 | 0:05:56 | Clip
Potential presidential candidates for 2016 have started to court donors -- and vice versa. Charles and David Koch, influential libertarian billionaires, plan to spend nearly a billion dollars in the next election cycle. Matea Gold of The Washington Post joins Gwen Ifill to discuss their sway over American politics.

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