National security expert who worked for DHS under the Obama administration discusses how 9/11 has shaped how America protects itself

Juliette Kayyem, President Obama’s Assistant Secretary for Intergovernmental Affairs at the Department of Homeland Security and CNN National Security Analyst, talks about the impact of 9/11 on homeland security and what has changed in the last 20 years.

This interview originally aired as part of Wharton Business Daily’s special, 9/11: 20 Years Later.