The current vice president is making news as she runs for the top job, but past VPs have often been relegated to the sidelines. Michelle Ferrari, writer, producer and director for American Experience, joins host Krys Boyd to discuss the history of the vice presidency, the 25th amendment that helped to solidify the role, and why the U.S. Constitution doesn’t offer much guidance on defining the position. Her documentary “The American Vice President” airs on PBS and streams on PBS.org.