With the Tucson shootings still in the news, there's a good chance President Obama will discuss gun control in his speech. How he does it could mean progress or stalemate on the issue. Over the last few weeks, gun-control advocates have focused on banning the type of high-capacity clips that the police say was used by the man accused in the Tucson shootings, Jared Loughner. But even timely efforts to ban particular kinds of weapons face long odds politically, and... (GunPolicy.org)