Carrying a concealed weapon is legal in 44 states, but does such legislation act as a deterrent to would-be criminals or does it turn simple arguments into potentially deadly ones? In this program, ABC News correspondent Cynthia McFadden explores the issue by looking at the case of a taxi driver in Texas who shot and killed two men he claimed were trying to kill him. The level of scrutiny in background checks for permit applicants is one of the topic’s crucial complexities. (15 minutes)