A few years before JFK was shot, an idealistic young lawyer set out on a mission to convince people something essential was missing from the Constitution: clear instructions for what should happen if a U.S. president was no longer able to serve. On this episode of our ongoing series We the People, the story behind one of the last amendments to the Constitution, and the man who got it done. John Feerick, Norris Professor of Law at Fordham Law School and author of The Twenty-Fifth Amendment - Its Complete History and Applications.