Amanpour and Company

Tonight on Amanpour and Company: Tim Kaine, Democratic Senator; Emily Oster, Economist & author, The Family Firm & Dr. Leana Wen, Former emergency physician & author, Lifelines; Nic Robertson, CNN International Diplomatic Editor. Hari Sreenivasan interviews Kathleen Belew, Assistant Professor of History, University of Chicago & Bill Moyers, Journalist.