The Supreme Court will consider Tuesday whether the Federal Communications Commission should continue to regulate curse words and other coarse content on radio and television.
The FCC has the authority to regulate broadcast content during prime time hours when children may be listening or watching programs.
Broadcasters say the FCC's policies are confusing and difficult to interpret.
With nearly nine of 10 households watching cable or satellite, broadcasters want justices to overturn a 1978 decision that allowed the FCC to continue monitoring radio and television for "indecent material," including curse words and nudity.
Television networks argue that the policy is unnecessary in a time when so many Americans have unregulated cable TV.