These United States: A history of the Constitution

Over the past several decades, the checks-and-balances of our government have been increasingly tested in ways our founding fathers never anticipated. Tony Dokoupil talks with Jill Lepore, author of "We the People: A History of the U.S. Constitution," and Jeffrey Rosen, president and CEO of the National Constitution Center, about our nation's bedrock document, which Rosen calls "absolutely eternal and timeless."

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