Politics Aug 01 Koch-backed group targets Democrats in 3 Senate races By Steve Peoples, Associated Press
Politics Jan 28 Watch 5:56 How the Koch brothers turned into political power brokers 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… By PBS News Hour