TY - JOUR A1 - Genschel, Philipp A1 - Jachtenfuchs, Markus A1 - Migliorati, Marta T1 - Differentiated integration as symbolic politics? Constitutional differentiation and policy reintegration in core state powers JF - European Union Politics N2 - What are the policy consequences of constitutional differentiation in core state powers? We argue that the most important consequence is not necessarily the exclusion of the constitutional outs from the policies of the ins, but their reintegration by different means. The outs often have strong functional and political incentives to re-join the policies they opted out from, and the ins have good reasons to help them back in. We develop a theoretical framework that derives the incentives for reintegration from the costs of a policy exclusion. We use a novel dataset of reintegration opportunities to map trends and patterns of reintegration across policy fields and member states. We analyze selected cases of reintegration to probe the plausibility of our theoretical argument. KW - Core state powers differentiated integration KW - European Union symbolic politics Y1 - 2022 U6 - https://doi.org/10.1177/14651165221128291 ER - TY - RPRT A1 - Jachtenfuchs, Markus A1 - Genschel, Philipp A1 - Migliorati, Marta A1 - Loschert, Franziska T1 - Differentiated integration and core state powers: the EU budget and Justice and Home Affairs N2 - This paper studies two areas of Core State Powers (CSP), i.e. the EU budget and Justice and Home Affairs. The two cases have the aim to reconstruct how Differentiated Integration (DI) has developed over time in these two specific domains. While the aim is the same for both cases, the way the cases are structured is substantially different. This is due to various reasons. First, the politics of the EU budget go back to the early days of the EU, while JHA is a post-Maastricht feature. This implies that the budget case study concentrates on a much longer time span. Second, DI in the budget interests several member states, while in JHA it is a phenomenon circumscribed to fewer members. Finally, the politics of the budget are decided through intergovernmental negotiations, while JHA is a rather supranationalised policy that relies a lot on secondary legislation and EU executive bodies such as EU agencies. Y1 - 2022 ET - Working Paper, EUI RSC, 2022/47, Integrating Diversity in the European Union (InDivEU) ER - TY - RPRT A1 - Jachtenfuchs, Markus A1 - Genschel, Philipp A1 - Migliorati, Marta T1 - Report on the expanded EUDIFF 1 dataset N2 - This report provides a general overview of the dataset under construction for WP5, EUDIFF-RES, focusing on differentiated integration in core state powers (CSP) in the European Union (EU). The report explains the rationale behind the data collection and provides an outline of the information gathered so far. The aim of the report is to make the dataset easily accessible to anyone who wishes to utlise it for further research. Y1 - 2022 UR - https://cadmus.eui.eu/handle/1814/74577 ET - EUI RSC; 2022/40; Integrating Diversity in the European Union (InDivEU)  ER - TY - RPRT A1 - Jachtenfuchs, Markus A1 - Genschel, Philipp A1 - Migliorati, Marta T1 - Report on the expansion of the EUDIFF 1 dataset N2 - The present report makes an overview of the progresses made so far in Work Package 5. At this initial stage, the main aim was to develop a new coding for core state powers in EU legislation. Such coding serves the purpose of expanding EUDIFF1 through new information on core state powers integration. The report is structured as follows: after a brief introduction, Section I presents a tripartite categorization of core state powers modes of integration. Section II tests the plausibility of the proposed categorisations through an empirical analysis that explores primary legislation from 1952 to 2016. Section III discusses the possibility of a more fine-grained distinction. Y1 - 2022 UR - https://cadmus.eui.eu/handle/1814/74573 ET - EUI RSC; 2022/38; Integrating Diversity in the European Union (InDivEU)  ER - TY - RPRT A1 - Jachtenfuchs, Markus A1 - Genschel, Philipp A1 - Migliorati, Marta T1 - Report on patterns of variation in DI across areas of core state power and instruments of integration N2 - The paper summarises different patterns of differentiation and reintegration in core state powers during the post-Maastricht period, based on the EUDIFF-RES dataset. Moreover, it offers a theoretical framework able to explain the observed variation. The framework is further tested by means of short empirical illustrations taken from different policy areas. Overall, the EUDIFF-RES dataset substantially contributes to our understanding of CSP differentiated integration by revealing that the behaviour of states vis-a-vis core state powers varies greatly according to the kind of resource, as well as the costs and opportunities attached to it. Y1 - 2022 UR - https://cadmus.eui.eu/handle/1814/74574 ET - Working Paper, EUI RSC, 2022/39, Integrating Diversity in the European Union (InDivEU)  ER - TY - JOUR A1 - Genschel, Philipp A1 - Jachtenfuchs, Markus A1 - Migliorati, Marta T1 - Nur Symbolpolitik? Differenzierung und Reintegration staatlicher Kerngewalten JF - integration N2 - Constitutional differentiation is often assumed to match perfectly with reality. We argue, however, that this is often not the case in core state powers. Constitutional differentiation often does not lead to the exclusion of the non-integrated member states (“outs”) from the policies of the integrated member states (“ins”) but to their reintegration by different means. We present a cost-benefit-model which argues that both “outs” and “ins” often have strong functional and political incentives to seek reintegration after an earlier decision for differentiation because the costs of exclusion are too high. We use a novel dataset of reintegration opportunities to map trends and patterns of reintegration across policy fields, reintegration instruments and member states in core state powers. We conclude by arguing that reintegration is a frequent but fragile phenomenon through which “ins” and “outs” cope with the costs of exclusion. Y1 - 2023 U6 - https://doi.org/10.5771/0720-5120-2023-2-146 VL - 46 IS - 2 SP - 146 EP - 161 ER -