Plan B to ban Trump from office

Donald Trump is widely expected to be acquitted in his second impeachment trial beginning this week, but Democratic strategists have a backup plan. There are growing expectations that the former President might be pursued using a little known section of the 14th Amendment of the US Constitution to ban him from holding office again. Today on The Signal, what to expect from this week's trial in the US Senate, and the next chapter in his opponents' playbook. Featured: Bruce Ackerman, Sterling Professor of Law and Political Science, Yale University