What do the former president, the current president and now the former vice president all have in common? They all had classified documents in places they shouldn’t have been. CNN Political Director David Chalian explains what we know about this discovery at Mike Pence’s home, and how it fairs politically with Donald Trump and Joe Biden’s cases. Both parties think these three instances show a systemic problem.To learn more about how CNN protects listener privacy, visit cnn.com/privacy