Constitutional Crisis: What Is It and Are We in One?

What does it mean to be in a constitutional crisis, and are we in one now? How far can presidents act in the context of congressional inaction? What is the role of courts in evaluating the legality of executive action?  To what extent can courts in this context declare the law and meaningfully constrain the president?  The conversation included perspectives on how these questions have been addressed throughout American history when courts have confronted forceful assertions of executive power.