Assuming this is really an attempt to block user's access to .torrent-files then it is a futile one. There are many other Torrent trackers serving the same files (or at least files that point to the same files), technical means to circumvent such blocks and, last but not least, many other ways to get the same material without using BitTorrent.

I feel like Captain Obvious writing this, but apparently it's not clear to those advocating and implementing such measures.

However, there's always a chance that some legislation exists that allows to block access to sites very quickly upon complaints from allegedly discriminated parties. Not being from the US I don't really know, but it seems to be that that would be a worrying sign of an upcoming culture of information censorship.

And if it is, then I wonder if there are representatives in the country that would defend the Internet user's rights. Perhaps I am totally misinformed, but from what I've read it would be hard to find a politician in the USA that is not endorsed by one big company or another. If that is so, can one expect their help on behalf of the people?