In this last episode, Peter travels to Iceland where a few years after the country’s economic collapse, leaders decided to create a new constitution, turning to the U.S. Constitution for inspiration. This prompts Peter to consider why our own founding document has been able to last for 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.