This dataset contains a list of visa-free countries for travelers with citizenship of United States, as well as the maximum number of days they can stay without a visa.

In recent decades we have seen a dramatic rise of dual citizenship; many states are now officially accepting the fact that their citizens have a further passport and many people use the opportunity to formalize their multiple affiliations. Switzerland is a vanguard in this respect. It accepted dual citizenship in 1992. Today more than ten percent of the Swiss in Switzerland and three quarters of the Swiss abroad have more than one passport. However, the consequences of this trend are disputed and not well understood. In popular discourses it is mostly seen as a threat to national cohesion and democracy. In contrast, many intellectuals and scholars conceive of dual citizens as vanguard of citizenship practices above and across nation states, and as an important source for democratizing a globalizing world order. However, the debates on national integration and the discourses on cosmopolitan/transnational democracy are not only taking place in different discursive fields, the two aspects are also not well connected in empirical research. The proposed research project tries to fill this void by tracing the political involvement of dual citizens in Switzerland as well as their transnational and their cosmopolitan citizenship practices. Since the terms cosmopolitan and transnational citizenship are often used in a fuzzy and inconsistent way, a first goal of the proposed research project is to lay out a theory-based and coherent typology of spaces of citizenship practices and political involvement beyond the nation state. This will facilitate our second and main goal which is to find out empirically whether transnational ties and membership in multiple national communities hinder political involvement in the country of residence, and whether they facilitate the development of supranational citizenship practices. Our analysis thus focuses on the question whether the formal membership of citizens in more than one political community (their citizenship status) influences their political involvement (their citizenship practices) within and beyond their country of residence. Focusing on the influence of formal status on actual practices of citizenship also allows us to evaluate the proposition that various forms of citizenship (status, rights, participation and identity) can be disaggregated and assigned to various political levels/fields of citizenship. Our empirical study follows a quantitative approach. We collect and analyze survey data. We survey dual citizens and control groups (autochtonous Swiss, foreign residents, naturalized mono-citizens) in Switzerland. By tracing citizenship practices of dual citizens in Switzerland, in other countries and on a supra-national level, we provide answers to the theoretically and practically highly salient question whether political involvement in one community hinders political involvement in other communities or not. This also allows us to assess whether dual citizens are a hazard for the political community of the country of residence and/or a vanguard for political community building beyond national confines.