Barack Obama has delivered his farewell speech in Chicago, where it all began for him. A message of hope but also a warning about the frailty of democracy. He was hoping that after being the first African-American president, he would pass the baton to the first woman president. But Donald Trump will be sitting in the White House as of January 20th instead. So what will Obama's legacy be? Marc Perelman puts the question to Elaine Kamarck, Director of the Center for Effective Public Management.
