The recent acceleration in acquiring second citizenships and residencies among American nationals invites a question that resists straightforward explanation: How should one interpret a movement in which individuals from a historically dominant nationality increasingly adopt strategies long associated with citizens of less advantaged states? Drawing on Peter Spiro’s legal history of dual nationality, Yossi Harpaz’s framework of compensatory citizenship, and Global Citizen Solutions’ multidimensional passport data, which records a notable repositioning of the U.S. passport in the Global Passport Index between 2021 and 2025, this analysis situates American demand within three converging shifts: legal, sociological, and structural. The central finding is that this movement represents not a reactive impulse, but an inversion of the directional logic that has organized global migration for over a century.
The Evolving Nature of Citizenship
Understanding why Americans are seeking second residencies and citizenships in record numbers requires first understanding how dual citizenship became legally permissible, why people treat nationality instrumentally, and where the concept of citizenship is heading. Three bodies of scholarship provide an essential framework.
From Abomination to Acceptance: The Legal History of Dual Citizenship
Professor Peter J. Spiro has produced the definitive legal history of dual citizenship in America. In At Home in Two Countries: The Past and Future of Dual Citizenship (NYU Press, 2016), Spiro traces a remarkable arc: from a period when dual nationality was likened to bigamy and considered an abomination against sovereign loyalty, to the present era of widespread acceptance and even institutional endorsement.
The hostility toward dual citizenship was not merely rhetorical. In the nineteenth century, it provoked genuine diplomatic crises between the United States and European sovereigns, particularly over the military conscription of naturalized American citizens who returned to their countries of origin. The peak of formal opposition came during the early Cold War, when the federal government aggressively used expatriation statutes to strip citizenship from Americans who voted in foreign elections, served in foreign armies, or took oaths of allegiance to other nations.
The turning point arrived in the 1960s, when a series of Supreme Court decisions fundamentally limited the government’s power to involuntarily expatriate its citizens. The landmark ruling in Afroyim v. Rusk (1967) held that the Fourteenth Amendment protects citizenship as a right that cannot be taken away without the citizen’s voluntary consent (the case involved Beys Afroyim, a naturalized U.S. citizen who lost his citizenship after voting in an Israeli election.). This principle was reinforced in Vance v. Terrazas (1980), which established that the government must prove an individual’s specific intent to relinquish citizenship, a standard that has made involuntary loss of U.S. nationality virtually impossible.
Spiro argues that dual citizenship should be embraced rather than merely tolerated, because dual citizens serve as conduits for American ideals and enhance deliberative democracy across borders. He notes that Americans holding dual citizenship have served as foreign ministers of Armenia and Bosnia, and as chief of the Estonian army (all while retaining their U.S. passports). In his earlier work, Beyond Citizenship: American Identity After Globalization (Oxford University Press, 2008), Spiro went further, arguing that citizenship status has become increasingly divorced from actual community membership, and that globalization is detaching identity from geographic location.
Recently, the Exclusive Citizenship Act of 2025 requiring all Americans holding dual citizenship to relinquish their foreign nationalities failed to pass the US Senate on legislative and constitutional grounds, as legal scholars forecast. With precedence, Vance v. Terrazas, if the US government cannot remove citizenship, nor can it oblige an individual to relinquish foreign citizenship, the rights on holding dual nationality being consistently protected by Afroyim.
The most notable practical effect of the Exclusive Citizenship Act of 2025 has been paradoxical: rather than deterring Americans from seeking second citizenships, the mere threat of such a restriction has accelerated applications, as people rush to secure foreign passports before any potential policy change could take effect.
The gap between legal reality and public perception helps explain why the current movement feels so sudden: Americans are now discovering options that have been available for decades.
Citizenship path: Nationality as a Strategic Asset
Citizenship 2.0: Dual Nationality as a Global Asset (Princeton University Press) was published in 2019 by Yossi Harpaz, a work that has since become the defining academic framework for understanding why individuals pursue second citizenships. Harpaz’s central argument is simple but analytically powerful: citizenship is no longer primarily a marker of national identity or belonging. It has become an instrumental asset. A rank within a global hierarchy that determines where one can travel, work, invest, and seek refuge (Harpaz, 2019, pp. 1–5).
Harpaz builds his framework on the concept of what he calls “compensatory citizenship“, the acquisition of a second nationality from a first-tier country to compensate for the limitations of one’s primary passport. This hierarchy, Harpaz contends, serves as the “point of departure” for understanding variation in how dual citizenship is pursued and used (p. 15). He explicitly distinguishes his approach from what he terms the “sentimental approach” to citizenship — the tradition rooted in Benedict Anderson’s concept of imagined communities, where nationality is primarily about emotional belonging (pp. 17–19).
When First Tier Citizens Start Hedging
What makes the current American diaspora movement so theoretically significant is that it represents a fundamental inversion of Harpaz’s framework. His research was designed to explain a specific directional flow: citizens of “second tier” countries acquiring passports from “first-tier” nations. The United States sat comfortably at the apex of this global hierarchy: the ultimate destination, not a point of departure. Americans were the citizenship that others sought, not the citizens doing the seeking.
That assumption no longer holds. The data from 2024–2026 shows Americans behaving in precisely the ways Harpaz documented among Israelis, Serbians, and Mexicans: acquiring second citizenships not because they intend to relocate immediately, but as compensatory hedges, an insurance policy against political instability, economic uncertainty, and the erosion of the advantages their primary nationality once conferred.
This reversal is not merely anecdotal; it is measurable in passport power itself. The Global Passport Index (GPI) 2025, developed by Global Citizen Solutions, which evaluates nationality not only by visa-free access but through a composite framework of three pillars: Enhanced Mobility (50% weight), Investment Potential (25%), and Quality of Life (25%), documents the erosion of American passport supremacy in stark numerical terms. In the inaugural GPI ranking of 2021, the United States held the number one position globally, leading across mobility, investment, and livability dimensions. By 2025, the U.S. passport had dropped to 14th place: a fall of thirteen positions in just four years.
The reasons of this decline relate directly to the factors that Harpaz’s hierarchy was built to measure. On the Enhanced Mobility dimension, the U.S. passport has weakened significantly: Brazil reinstated visa requirements for American travellers in April 2025, citing lack of reciprocity; Vietnam excluded the U.S. from its recently expanded visa-free list; and China’s strategic opening to European passport holders, while excluding Americans, further eroded the comparative mobility advantage. The GPI’s 2025 Enhanced Mobility Index places the U.S. passport at 39th globally, a striking indictment for a nationality that once defined the gold standard of travel freedom.
In the Quality of Life Index, which evaluates sustainable development (SDGs), cost of living, freedom, happiness, environmental performance, and migrant acceptance, the U.S. has been penalized by rising domestic costs, declining perceptions of political stability, and comparative erosion in healthcare access and social infrastructure metrics.
The implications are profound for Harpaz’s framework. If compensatory citizenship is driven by the “global hierarchy” of passport value, then a declining U.S. passport provides a structural explanation for American demand. Americans are not simply reacting to a single election or a news cycle. They are responding, whether consciously or not, to a measurable deterioration in the strategic value of their nationality across the three dimensions that define passport power in a multidimensional perspective. The country whose citizenship was once the world’s most coveted insurance policy now finds its own citizens seeking for coverage elsewhere.
Harpaz also explored the supply-side dynamics of this phenomenon: how states actively court dual citizens for economic and demographic reasons. This supply-side analysis has become equally relevant to the American case, as across all regions of the world governments’ residency and citizenship programs adapt to attract this demand.
Two Parallel Strategies: Relocation and Optionality
The bottom line is the American diaspora movement is not a single phenomenon but two overlapping strategies operating in parallel. The first is permanent relocation: retirees, digital nomads, remote workers, and families physically establishing new lives abroad, drawn by lower costs, better healthcare, different educational systems, or political dissatisfaction. The second, and arguably the more transformative, is the pursuit of strategic optionality: Americans acquiring a second residency or citizenship with no intention of leaving immediately, but with the explicit goal of having a pathway that can be activated should domestic conditions deteriorate.
This is Harpaz’s compensatory citizenship applied directly to Americans, the passport as insurance policy, the residency as an option on an alternative future. The calculus is straightforward, securing optionality while preserving U.S. nationality costs relatively little compared to the peace of mind it provides; if conditions improve, the second passport will be beneficial for mobility enhancement and investment options, in many cases, and if they deteriorate, it becomes a lifeline.
Through the GCS analytical lens, both strategies represent rational responses to a world of increasing uncertainty, and both generate value for origin and destination countries alike. As the GCS November 2025 briefing on adaptive citizenship concluded, this evolving concept of nationality “empowers individuals to navigate a complex global order while ensuring resilience, security, and new opportunities for growth” (GCS, 2025) whether the individual physically relocates or maintains strategic optionality from the comfort of their American home.
Conclusion
As the analysis shows, the American turn toward second citizenship is the product of three converging shifts. Legally, more than half a century of court rulings from Afroyim to Vance has made dual nationality a protected right that no legislative effort can meaningfully roll back. Sociologically, Harpaz’s framework of compensatory citizenship, originally developed to explain why citizens of weaker-passport countries seek a second one, now describes American behavior with uncomfortable precision. And empirically, the decline of the U.S. passport across mobility, investment, and quality-of-life dimensions provides the structural reason behind it.
What can be observed, then, is a reversal of the logic that has shaped global migration for over a century. First-tier citizens are now hedging, not out of disloyalty, but out of the same rational calculus that citizens of every other region have long applied to their own nationalities.
Sources and References
- Afroyim v. Rusk, 387 U.S. 253 (U.S. Supreme Court, 1967).
- Global Citizen Solutions. Global Passport Index 2025.
- Global Citizen Solutions. “The Transformation of Citizenship: From Political Identity to Strategic Mobility Tool.” Intelligence Briefing, November 12, 2025.
- Harpaz, Yossi. Citizenship 2.0: Dual Nationality as a Global Asset. Princeton, NJ: Princeton University Press, 2019. Princeton Studies in Global and Comparative Sociology, Book 6. ISBN: 978-0-691-19406-6.
- Harpaz, Yossi. “Compensatory Citizenship: Dual Nationality as a Strategy of Global Upward Mobility.” Journal of Ethnic and Migration Studies 45, no. 6 (2019): 897–916.
- Harpaz, Yossi, and Pablo Mateos. “Introduction: Strategic Citizenship: Negotiating Membership in the Age of Dual Nationality.” Journal of Ethnic and Migration Studies 45, no. 6 (2019): 843–857.
- Spiro, Peter J. At Home in Two Countries: The Past and Future of Dual Citizenship. New York: NYU Press, 2016. Citizenship and Migration in the Americas, No. 11. ISBN: 978-0-8147-8582-9.
- Spiro, Peter J. Beyond Citizenship: American Identity After Globalization. Oxford: Oxford University Press, 2008.
- Vance v. Terrazas, 444 U.S. 252 (U.S. Supreme Court, 1980).