Defamatory statement by or on behalf of candidate for public office; liability.

Sec. 2. The owner, licensee or operator, or the agents or employees of any such owner, licensee or operator of such a station or network of stations, shall not be liable for any damages for any defamatory statement uttered over the facilities of such station or network by or on behalf of any candidate for public office where such statement is not subject to censorship or control by reason of any federal statute or any ruling or order of the federal communications commission made pursuant thereto.