Department of Homeland Security should be dismantled, former national security official says

Department of Homeland Security should be dismantled, former national security official says

There have been growing calls to dismantle the Department of Homeland Security, as the Trump administration deploys federal agents to crack down on crime. Richard A. Clarke — a former national security official who served under George H.W. Bush, Bill Clinton and George W. Bush — joins CBSN's Tanya Rivero to discuss.