WASHINGTON — Last April, on the first anniversary of the shootings at Columbine High School, Vice President Al Gore castigated Gov. George W. Bush for offering only "half a solution" to the problem of gun violence. "We have to address not just the spiritual dimension of this challenge, but also the physical fact that there are too many guns," Mr. Gore said. "I think one of the lessons of Columbine is that we have to stand up to the N.R.A. and the gun industry." But... (GunPolicy.org)