According to this post on Lockergnome, the US Congress is hearing arguments about DRM interoperability. From the post:
Congress is debating whether or not to require that music shops keep their DRM open for interoperability. Apple wasn't present at the hearings, but Napster's CEO was, arguing that the market should make the decision about interoperability. Considering that previous standards (FireWire/USB, Betamax/VHS) have been decided by the market, could it be that Apple isn't big enough to keep the government out of its industry?