 The obligation-correlative view of authority is not universally accepted. Some argue that the power to impose moral obligations is only one of the many ways in which political authorities have the capacity to shape the normative status of those subject to them. The distinctive feature of political authority, according to this approach, is the broader power unilaterally change the duties, liberties and claim-rights of their subjects (Copp 1999 and Perry 2012). Others argue that political authority involves no claim right, but only a set of liberties: to decide certain questions for a society and to enforce their decisions. (Soper 2002: 85 ff; cf. Ladenson 1980; Greenawalt 1987: 47–61; and Edmundson 1998: 7–70).