A single passport concentrates a range of legal, financial, and security risks in one sovereign. In 2026 the IMI analysis identifies seven ways that reliance on one citizenship can become a point of failure, and explains why a second passport can mitigate—but not eliminate—those vulnerabilities.
1. Revocation of citizenship
- Kuwait – Since 2024 the government has stripped more than 70,000 people of their nationality; including dependents, estimates approach 250,000 citizens, roughly 20 % of the population. Women naturalized through marriage and holders of undisclosed second nationalities were among those affected, leaving many stateless.
- United States – A June 2025 Department of Justice memo made denaturalization a top civil‑enforcement priority. Civil denaturalization requires a lower burden of proof than criminal cases, offers no right to a court‑appointed lawyer, and can be pursued at any time. Filings rose from fewer than ten per year to over 30 in May–June 2026 alone.
A loss of the sole passport leaves a person without any sovereign protection; only dual nationals can fall back on their other nationality.
2. Exit bans and passport revocations
- In May 2026 the U.S. State Department began revoking passports of Americans who owe child support, starting with ≈2,700 people owing $100,000 or more. The legal threshold is only $2,500, suggesting the sweep could affect hundreds of thousands. Revoked passports cannot be reactivated abroad; the holder may receive a limited‑validity travel document that only returns them to the United States.
- Exit bans are also used in tax disputes and civil investigations, often without a fixed end date.
A second passport restores the ability to leave when the primary one is blocked.
3. Citizenship‑based taxation
- The United States taxes worldwide income of its citizens regardless of residence—a rule dating to the Civil War. Eritrea imposes a similar diaspora tax.
- In October 2025 the French National Assembly voted (131‑132) on a measure to extend French tax liability for high‑earning expatriates up to 10 years after they move abroad, targeting incomes above ≈€235,500 and jurisdictions with at least 40 % lower tax rates. The proposal failed by one vote but reflects a broader trend; Sweden, Finland, and Germany already tax departing residents for a period after emigration.
Because most countries do not allow renunciation that would render a person stateless, shedding a taxing nationality is only possible when another citizenship already exists.
4. Conscription obligations
- Croatia introduced compulsory military service in 2026, becoming the tenth EU state with a draft. Denmark extended conscription to women in 2025, and Germany is rebuilding its system after suspending it in 2011. Ukraine lowered its mobilization age during the ongoing war.
A second passport does not cancel service obligations for the primary citizenship, but it can give children a fallback nationality and a place to reside outside the reach of any single country’s draft.
5. Dependence on one government for consular protection
- During the 2025–2026 Middle‑East airspace closures, the United Arab Emirates evacuated ≈500 golden‑visa holders, demonstrating the practical impact of consular capacity. Countries with extensive diplomatic networks (e.g., Ireland’s >100 missions for a 5 million population) can extract citizens more effectively than those with limited reach.
Holding only one passport ties evacuation and assistance to the resources and priorities of a single state.
6. External downgrade of passport value
- The United Kingdom recently removed visa‑free access for Saint Lucia and Nauru, citing concerns over asylum claims and citizenship‑by‑investment programs. Ireland subsequently cut visa‑free entry for Saint Kitts and Nevis, Saint Lucia, and Nicaragua.
Visa‑free privileges are granted by the receiving state and can be rescinded at any time, independent of the holder’s actions.
- Algorithmic “invisible walls” are increasingly used to screen travelers based on risk profiles, reducing the practical utility of a passport even when its visa‑free count remains unchanged.
7. Nationality as a liability in sanctions and capital controls
When a country faces international sanctions, its nationals may experience banking restrictions, heightened transaction scrutiny, and asset freezes, regardless of personal conduct. Capital controls can similarly trap funds simply because the holder is a citizen of the sanctioned state.
What a second passport can and cannot solve
What it can address
- Provides an unconditional right of entry and a sovereign obligation to protect the holder, mitigating risks of passport revocation, exit bans, and limited consular reach.
- Enables renunciation of a taxing nationality without becoming stateless, allowing avoidance of citizenship‑based tax regimes.
- Offers a fallback for children, potentially shielding the next generation from conscription or other obligations tied to the primary citizenship.
What it cannot address
- It does not prevent denaturalization proceedings in the primary country.
- It does not eliminate citizenship‑based taxation for the original passport.
- It does not guarantee exemption from conscription obligations tied to the first nationality.
- It does not replace the need for robust residence permits or other mobility tools when travel alone is the goal.
Practical considerations
- Act early – Investment‑based citizenship programs can tighten eligibility criteria, raise fees, and increase due‑diligence requirements with little notice. Securing a second passport before a crisis or policy change is advisable.
- Assess the risk profile – Individuals whose sole nationality is subject to sanctions, aggressive tax enforcement, or frequent exit bans should prioritize acquiring a second citizenship in a politically stable, neutral jurisdiction.
- Combine with residence permits – While a residence permit can broaden mobility, it does not provide the sovereign protection or exit rights that a second passport offers.
In summary, a single citizenship concentrates multiple sovereign risks—revocation, exit restrictions, tax exposure, conscription, limited consular support, external devaluation, and sanction‑related liabilities. A second passport can alleviate many of these vulnerabilities, but it is not a universal safeguard. Decision‑makers should evaluate the specific threats associated with their primary nationality and consider acquiring an additional citizenship well before any crisis emerges.
Source article: www.imidaily.com
