Learning From History

Today's show is a best-of, so we won't be taking any calls. But the comments page is always open!

What if history played out differently? Jeff Greenfield, former senior political correspondent for CBS News and the author of Then Everything Changed: Stunning Alternate Histories of American Politics: JFK, RFK, Carter, Ford, Reagan, discusses some big what-ifs in American history. Plus: your favorite passages from the Constitution; and the Jill Lepore history hour with four moments in American history that shaped the current moment.