Consider the systems that have kept the Constitution healthy for more than 225 years.

In this last episode, Sagal travels to Iceland, where after the country’s economic collapse, leaders decided to create a new constitution, looking to the U.S. Constitution for inspiration. This prompts Sagal to consider why our own founding document has lasted more than 225 years. He looks at the systems that have kept the Constitution healthy — amendments, judicial interpretation, checks and balances — and also at the political forces that threaten to undermine the framers’ vision: excessive partisanship leading to gridlock, money in politics and gerrymandering.