The FCC's statutory mandate to see that broadcasters operate in the public interest and Congress' reaffirmation, in the 1959 amendment to 315 of the Communications Act, of the FCC's view that the fairness doctrine inhered in the public interest standard, support the conclusion that the doctrine and its component personal attack and political editorializing regulations are a legitimate exercise of congressionally delegated authority. Pp. 379-386.

Section 315 [47 U.S.C. §315] Facilities for candidates for public office.
(a) If any licensee shall permit any person who is a legally qualified candidate for any public office to use a broadcasting station, he shall afford equal opportunities to all other such candidates for that office in the use of such broadcasting station: Provided, That such licensee shall have no power of censorship over the material broadcast under the provision of this section. No obligation is hereby imposed under this subsection upon any licensee to allow the use of its station by any such candidate. Appearance by a legally qualified candidate on any –
(1) bona fide newscast,
(2) bona fide news interview,
(3) bona fide news documentary (if the appearance of the candidate is incidental to the presentation of the subject or subjects covered by the news documentary), or………….