Transportation Secretary Pete Buttigieg said Sunday on ABC’s “This Week” that those blaming school shootings on a lack of security was the”definition of insanity.” Anchor George Stephanopoulos said, “You’re coming to us from South Bend, the former mayor of that town. Let me ask you, in the wake of this epidemic of gun violence, what would you be doing?” Buttigieg said, “The worst part of the job being mayor is talking to families of people who have lost their loved ones and knowing that nothing you can do will bring those loved ones back. As mayor, as every mayor is...