So, let me see if I can summarize and remove any of the emotion that got into this thread...
Broadcasters (that would be those TV and FM/AM radio signals that can arrive over-the-air unencrypted) are under the jurisdiction of the FCC for content, within the previous regulations and court decisions that have narrowed the scope of the jurisdiction.
Cable providers (which the FCC defines as both coax and fibre) were to have been under more FCC jurisdiction in the 1990s but two court decisions prevented the FCC from ever enforcing those rules. This leaves any content control to the cable companies and content producers. The exception to this is that everyone is, upon request, to be provided with a way to block any cable channel. The V-Chip is one way to do this. Satellite providers fall into another category but because the content providers are often the same between pizza dish satellite providers and cable, the net effect is very similar.
In the case of FIOS, they are a cable provider and the FCC has almost no authority to prevent a program from being cable-cast. The content provider, in this case the USA channel, would be the likely source of any bleeping since they control the content. A number of special interests groups as well as the target audience are the likely reasons for any bleeping.
USA offers a number of feeds on C-Band to the cable companies (at least East and West coast feeds) and could also send fibre out for distribution if special content were required.