Citizenship is usually conceptualized as a unitary and exclusive relationship between an individual and a sovereign state; yet the European Union (EU) has developed the most advanced form of contemporary supranational citizenship. Citizenship of the European Union guarantees EU citizens and most members of their families the right to move, live, and work across the territory of the EU. It also guarantees the right to vote in local and European elections in the member state of residence, the right to consular protection outside the EU when the member state of nationality is not represented, the right to access documents or petition Parliament or the Ombudsman in any of the official languages, and the right to be treated free from nationality-based discrimination. Though on the political agenda since the postwar origins of European integration, EU citizenship was not formalized into EU law until the Maastricht Treaty. Since then, the Court of Justice of the European Union (CJEU) has declared that “EU Citizenship is destined to be the fundamental status of nationals of the Member States” and there are ongoing discussions about the relationship between EU and member state citizenship. In terms of identity, increasing numbers of Europeans see themselves as citizens of the EU, and questions of citizenship are at the heart of debates about the nature of European integration.
The question of membership and belonging is widely recognized to have been at the root of many political crises in Africa since independence. The legal frameworks for citizenship were largely inherited from the colonial powers and still show strong affinities across colonial legal traditions. However, most African states have enacted significant amendments to citizenship laws since independence, as they have grappled with issues of membership, aiming to include or exclude certain groups. Substantive provisions have diverged significantly in several countries from the original template. African states have shared global trends toward gender equality and acceptance of dual citizenship. In relation to acquisition of citizenship based on birth in the territory (jus soli) or based on descent (jus sanguinis), there has been less convergence. In all countries, naturalization is inaccessible to all but a few. Manipulation of citizenship law for political purposes has been common, as political opponents have at times been accused of being non-citizens as a way of excluding them from office, or groups of people have been denied recognition of citizenship as a means of disenfranchisement. Moreover, even in states where a substantial proportion of residents lack identity documents, it seems that the rules on citizenship established by law have themselves had an impact on political developments. The citizenship status of many thousands of people living in different countries across Africa remains unclear, in a context where many citizens and non-citizens lack any identity documentation that records their citizenship. The content of the law is arguably therefore less influential than in some other regions. A rapid development in identification systems and the increasing requirement to show identity documents to access services, however, is likely to increase the importance of citizenship law. In response to these challenges, the African continental institutions have developed, through standard setting and in decisions on individual cases, a continental normative framework that both borrows from and leads international law in the same field.