Nancy MacLean's book stretches back to 19th century Vice President — and ardent secessionist — John C. Calhoun to find the roots of modern libertarianism, which she calls a threat to democracy...

Nancy MacLean's book stretches back to 19th century Vice President — and ardent secessionist — John C. Calhoun to find the roots of modern libertarianism, which she calls a threat to democracy...