Announcing Wednesday that he would send proposals on reducing gun violence in America to Congress, President Obama mentioned a number of sensible gun-control measures. But he also paid homage to the Washington conventional wisdom about the many and varied causes of this calamity — from mental health issues to school safety. His spokesman, Jay Carney, had said earlier that this is "a complex problem that will require a complex solution." Gun control, Carney added, is... (GunPolicy.org)