What should Congress do? If they want to be pro-consumer, they could require sports be on a separate tier. So how do they implement that? What about March Madness when even stations like TruTV have basketball games on? You need to come up with regulations for what counts as a "sports" channel. If they have to have sports all the time, then RSNs will put reality shows on late at night and in the early morning when people aren't watching so they claim they aren't sports channels and still push to get included in the basic tiers.
Of course the idea that Congress would do something that's pro-consumer is laughable, because they get their campaign money from Disney/ESPN, Fox, and billionaire team owners who want to keep things the way they are. Everyone from team owners to college presidents will plead poverty and line up at the trough if Congress changes the law in a way that hurts them, or that they can claim hurts them.
Best to stay out of it, and let things solve themselves eventually. It may take a lot longer, but I'd rather have Congress attempting to deal with more important problems than worrying about disputes that keep the Dodgers off TV.