Federalize the "hot news" doctrine. This doctrine protects against types of poaching that copyright might not cover -- the stealing of information not by direct copying but simply by taking the guts of the content. While the Internet has made news vulnerable to pilfering because of the ease of linking from one site to the next, the hot-news doctrine has limited use because it is only recognized in a few states.
A spent some time reading about the doctrine (summaries by real-life lawyers here and here) and my understanding is this would be a pretty drastic expansion of current copyright protections. As it stands, the law treats literary and journalistic output as having two parts: an expressive portion (which is protected by copyright) and a factual portion (which is not). If the Washington Post gets a scoop about some smarmy politician's affair, the New York Times can still summarize the same news. It can't copy-paste the same text (sorry Maureen) but the facts are fair game.
But expanding the hot news doctrine would expand some copyright protections for the factual content. It would give news providers a temporary monopoly -- "a quasi property right" -- over their scoops. I'm not really in a position to judge the case law (though I thought Eugene Volokh's two-paragraph takedown was mostly convincing), but temporary factual monopolies would certainly put the kibosh on the a lot of what bloggers do.
Pakistan is expanding its nuclear arsenal. See?
This article available online at:
http://www.theatlantic.com/politics/archive/2009/05/how-to-destroy-blogging-with-one-easy-law/17700/