What's different now that Brexit is official?

After years of political turmoil, the United Kingdom has finally left the European Union. So now that Brexit is official, what exactly has changed? What happens when a country goes through a massive divorce like this? And what does it mean for the UK, for the EU, and the rest of the world? Dr. R. Daniel Kelemen, Professor of Political Science and Law and Chair in European Union Politics at Rutgers University joins KYW Newsradio in Depth to talk about what Brexit means and why it matters.