Actually, he probably is (tilting at windmills) but in an era where not being allowed to produce simulated kid porn can be adjudged as against the first amendment, I would say that a bunch of Senators using official stationery to infer ABC's right to broadcast would be taken away might be illegal.
I mean, if Bush sent a letter to CBS inferring the same for their biased broadcasting, you know the ACLU would be all over it. Maybe that's the direction to go.
Have them spend all their ill gotten gains on something useful for once.
PS. I never send letters to the government, unless they write me first. I'd rather pretend I'm not here.
That won't work, because the ACFLU is funded by taxpayers (us). They attack free speech, they don't defend it.