The FCC exists (in part) to enforce a certain morality on public broadcasters. Whatever we think about that today, that was a core responsibility of the FCC when it started and that still exists today.
replies(9):
Why do California and Mississippi have to follow the same standards?
So the justification for federal intervention (interstate commerce) is there.
Of course, that doesn't prevent the feds from letting the states handle it, but it does create an incentive for some states to want the feds to handle it.
I think the New England states could manage this together fine.
I agree, the constitution grants the authority to the federal government to. But more and more, I think we should just let the states deal with as much as possible. It seems pretty clear we are far from a national consensus on many basic issues, and the constant winner take all grab for power is making things worse.