Does Getting a Second Citizenship Affect US Citizenship?

Getting a second citizenship does not, by itself, end US citizenship.

The State Department says US law does not require a citizen to choose between US nationality and another nationality. An American may naturalize in a foreign country and remain American. The decisive issue in a loss-of-nationality case is not simply whether a foreign citizenship was acquired. It is whether a legally recognized act was performed voluntarily with the intention of relinquishing US nationality.

This page addresses the loss-of-citizenship question. Our full guide for US dual citizens covers taxes, reporting and the broader practical trade-offs.

US law allows more than one nationality

A person may become a dual national through:

• Birth in the United States to a parent who transmits another nationality.
• Birth abroad to a US-citizen parent while also acquiring the birth country’s nationality.
• Citizenship by descent.
• Marriage under a foreign country’s law.
• Naturalization in another country.
• Naturalization in the United States while retaining a prior nationality.

The United States does not impose a general approval process before an existing citizen obtains another nationality. Whether the foreign country grants or retains its citizenship is governed by that country’s law.

Naturalizing abroad is not enough to cause loss

Naturalization in a foreign state is listed among acts that can be relevant to nationality loss under US law. The act alone is not the whole test. The State Department explains that the person must act voluntarily and with the intention of relinquishing US citizenship.

Someone who naturalizes abroad because they want residence rights, family unity or an additional passport, while intending to remain American, is not in the same position as someone using the naturalization as an intentional act of expatriation.

Intent is fact-specific. Anyone actually trying to relinquish US nationality should obtain specialist legal advice and use the formal State Department process rather than assume a foreign application will produce the intended result.

A foreign oath does not automatically control US status

Some countries require an oath of allegiance or language renouncing prior allegiances. That wording may affect the person’s status under the foreign country’s law. It does not automatically decide the US nationality question.

The US analysis still considers voluntariness and intent. At the same time, a foreign country may refuse dual citizenship and require proof of formal renunciation before completing its naturalization process.

Before applying, answer two separate questions:

1. Will the United States regard the act as relinquishing US nationality?
2. Will the foreign country let the applicant retain US citizenship?

One country’s answer does not substitute for the other’s.

Using the other passport does not end US citizenship

The State Department says use of a foreign passport for travel to or from a country other than the United States is not inconsistent with US law.

US dual citizens must still use a US passport to enter and leave the United States. Our guide to which passport a dual citizen should use explains the border sequence.

Using the foreign document may cause the foreign country to treat the traveler solely as its citizen while there. That can limit US consular access, as explained in our guide to dual citizenship and consular protection.

How US nationality is actually relinquished

US law recognizes specified potentially expatriating acts. The most explicit route is formal renunciation before a US diplomatic or consular officer abroad, followed by the State Department’s nationality-loss process.

Other acts can become relevant when performed voluntarily with the required intent, including certain foreign naturalizations, oaths, government service or military service. The details and exceptions matter.

Nationality loss has consequences beyond the passport:

• Loss of the unrestricted right to enter and live in the United States.
• Possible tax-compliance and expatriation-tax issues.
• Effects on children and family planning.
• Visa or immigration requirements for future US travel.
• Potential difficulty reversing the decision.

It should never be treated as a form-filing shortcut.

What the second citizenship does change

Even when US citizenship remains intact, the additional nationality can create:

• Rights to live, work and vote in the other country.
• Passport-use requirements.
• Tax or financial reporting in the other country.
• Military or national-service duties.
• Registration and identity-document obligations.
• Limits on US consular assistance while in that country.

The second citizenship adds a legal relationship. It does not merely add visa-free destinations.

The Civita view

For most Americans, the strategic value of a second citizenship is optionality, not the elimination of US status. That makes the correct route depend on residence rights, family transmission, cost, tax interaction and long-term political durability.

A Civita Program-Fit Report compares those factors before capital moves. Civita is an independent, client-paid advisory and takes no commission from governments, developers, funds or professional referrals.

This guide is general information, not legal or tax advice. Nationality loss is consequential and fact-specific. Obtain qualified US nationality and tax advice before taking any action intended to relinquish citizenship.

What changes, and what does not

Event	US citizenship result	Practical consequence
Receiving another citizenship	Normally retained	New rights and duties under the other country’s law
Using the other passport abroad	Normally retained	The other country may treat you only as its citizen
Naturalizing abroad	Normally retained absent intent to relinquish	Review oaths and destination-country obligations
Formal renunciation before an authorized US official	Lost after the legal process is completed	Irreversible nationality and possible tax consequences

The relevant distinction is between acquiring another legal status and intentionally completing a US relinquishment process. They are not the same act.