The comparative constitutional analysis of federalism is particularly complex. On the one hand, “[e]ach federal bargain is in important respects unique to the parties' situation,” in contrast to constitutional provisions asserted to guarantee fundamental rights. On the other hand, “provisions concerning federalism may have different historical meanings in a particular polity, tied in different ways to the political compromises.” In addition, the federal system relies on an “interrelated package of arrangements.” Therefore, no element should be considered isolated from other elements of the federal compromise. As a consequence, in order to compare federalism issues it may be necessary to evaluate “the entire interrelated structure.”