There used to be something called "the fairness doctrine" in broadcasting. It basically said that whenever a station broadcast a certain view that they had to give equal time to the opposing viewpoint. The fairness doctrine was stricken down in 1987.
Senator Rockeffeler is upset with the way politics are becoming so polarized and believes stations that have a strong partisan viewpoint contribute to this. He sees stations with an extreme Conservative bent like Fox News or an extreme liberal bent like MSNBC as a reason why Americans and politicians are becoming so polarized and why rhetoric is becoming so shrill and extreme. He would like to see something like the fairness doctrine to water down extreme viewpoints.
Of course since both Fox News and MSNBC are both cable networks the fairness doctrine even if it still existed would have never applied since it only applied to broadcast TV.
Chris, think about it- how many 'dirty' tricks exist in (the great USA) political system, both in your country (i. e. "Who killed JFK?) and elsewhere (i. e. Latin America, for example)- What is the use of having power if you never get a chance to exert it? It is kinda like owning a Porsche and never driving over 55 miles per hour...