Former Vice President Mike Pence received a not so warm welcome during his appearance at the annual National Rifle Association (NRA) convention on Friday afternoon. After being introduced by NRA CEO Wayne LaPierre, Pence faced loud boos from across the room as attendees expressed what appeared to be a strong dislike for the former vice president and attempted to drown out those applauding him. "Well hello NRA," Pence began, to more boos.