"Another Right-Wing Conspiracy in Washington?" by Bill Press. The Washington Post. February 8, 2009; Page B08:
...the terms of their FCC license, "to operate in the public interest and to afford reasonable opportunity for the discussion of conflicting views of issues of public importance." Stations are not operating in the public interest when they offer only conservative talk.
For years, the Fairness Doctrine prevented such abuse by requiring licensed stations to carry a mix of opinion. However, under pressure from conservatives, President Ronald Reagan's Federal Communications Commission canceled the Fairness Doctrine in 1987, insisting that in a free market, stations would automatically offer a balance in programming.
That experiment has failed.