Current due process law gives little protection to prisoners at the point of parole, even though the parole decision, like sentencing, determines whether or not a person will serve more time or will go free. The doctrine regarding parole, which developed mostly in the late 1970s, was based on a judicial understanding of parole as an experimental, subjective, and largely standardless art—rooted in assessing the individual “character” of the potential parolee. In this Article we examine the foundations of the doctrine, and conclude that the due process inquiry at the point of parole should take into account the stark changes in sentencing and parole practice over the years. Since the development of the parole due process doctrine in the 1970s...