Paul Helmke and John Lott talked about the shooting in Tucson, Arizona, in which Representative Gabrielle Giffords and 13 others were wounded and six people killed on January 8, 2011. They focused on jurisdiction and purview of federal gun laws, state gun laws, the efficacy and implementation of background checks, the success of bans on various kinds of gun-related weaponry, and the effect that past multiple-victim- shootings have had on guns laws.