While Congress fights tooth and nail over countless judicial nominations, no federal judge has ever been impeached on the basis of their decision making. The explanation for this incongruity, Geyh suggests, is not the balance of powers, but a dynamic equilibrium: a constant give-and-take between Congressional efforts to control the judiciary, and historical norms of judicial independence.Charles Geyh's book, with a new foreword by Associate Justice Sandra Day O'Connor, is essential reading for any student of American government, Congress and the courts.