Reporter Clara Harter speaks with James Carroll, the former Director of the White House Office of National Drug Control Policy, known colloquially as the Drug Czar, about the dangers of fentanyl. Fentanyl is a synthetic opioid deadly in quantities as small as one grain of sand. In light of the tragic death of Santa Monica teen Sammy Berman Chapman, they discuss the rise in sales of lethal fentanyl-laced pills over social media and what can be done to combat it.