Exclusive Citizenship Act 2025: What Does This Bill Mean for Americans Living Abroad?

In early December 2025, U.S. Senator Bernie Moreno introduced a new bill: the Exclusive Citizenship Act of 2025, officially registered as S.3283. The proposal immediately drew global attention, especially among Americans living abroad and people who hold both U.S. citizenship and another nationality.

The bill is still at a very early stage. It is not law, and dual citizenship remains legal for U.S. citizens. However, because the proposal directly concerns Americans with more than one nationality, it has created understandable concern among U.S. citizens living outside the United States.

This article explains what the Exclusive Citizenship Act of 2025 proposes, who may be affected, what the current status of S.3283 is, why the bill is considered unlikely to become law in its current form, and what it could mean for your U.S. tax obligations.

Current Status of S.3283: Where the Bill Stands

As of the latest available public information, the Exclusive Citizenship Act of 2025 has only been introduced in the Senate. It has not passed the Senate, has not passed the House of Representatives, and has not been signed into law.

• The most important point for Americans abroad is simple: nothing has changed in current law.

What Is the Exclusive Citizenship Act of 2025?

The Exclusive Citizenship Act of 2025 proposes that U.S. citizens should owe “sole and exclusive allegiance” to the United States. In practice, this would mean that American citizens could no longer hold dual or multiple citizenship.

This would represent a significant break from current U.S. practice. Today, the United States does not generally prohibit dual citizenship. Millions of Americans worldwide hold another nationality alongside U.S. citizenship, either because they were born with it, acquired it through a parent, became naturalized in another country, or obtained it through marriage or long-term residence abroad.

What Does S.3283 Propose? The Key Provisions Explained

The proposal contains several major provisions that would affect U.S. citizens with another nationality.

First, American citizens would not be allowed to simultaneously hold U.S. citizenship and foreign citizenship. Those who already hold another nationality would have to choose which nationality to keep.

Second, existing dual citizens would be given a limited period to choose between U.S. citizenship and their other nationality. The bill refers to a one-year period after enactment, while certain provisions would become effective later. In practice, this means that the exact timing could be complex and would depend on the final legal text and implementation rules if the bill were ever enacted.

Third, Americans who voluntarily acquire another nationality after the law takes effect would be deemed to have relinquished U.S. citizenship.

Finally, the proposal would require new administrative systems to identify and verify whether U.S. citizens also possess foreign citizenship. That would be highly complex, because the United States does not maintain a central registry of all citizens who hold another nationality.

Will the Exclusive Citizenship Act of 2025 Pass?

At this stage, the likelihood that the Exclusive Citizenship Act becomes law in its current form appears low.

There are three main reasons for this.

First, the bill is still only at the introductory stage. It has been referred to the Senate Judiciary Committee and would still need to move through committee review, pass the Senate, pass the House of Representatives, and be signed by the president before it could become law.

Second, the proposal would almost certainly face serious constitutional challenges. U.S. Supreme Court precedent has long protected U.S. citizenship from involuntary loss. In Afroyim v. Rusk (1967), the Supreme Court ruled that Congress cannot strip a U.S. citizen of citizenship without voluntary relinquishment. This principle was further addressed in Vance v. Terrazas (1980), which focused on the requirement of intent.

Third, the bill would be extremely difficult to enforce. Many people do not actively “choose” dual citizenship. They may acquire it automatically through birth, parentage, marriage, or local nationality law. Some countries also make renunciation difficult or impossible. That means the bill would not only affect voluntary dual citizens, but also families, children, and people who may not even be fully aware of their nationality status.

Who Would Be Affected by the Exclusive Citizenship Act?

The group potentially affected by the proposal is large and varied. It includes:

• Americans who automatically acquired another nationality at birth, either through their parents or because they were born in another country.
• Naturalized Americans who retained the nationality of their country of origin.
• Americans living abroad who acquired another nationality through marriage, long-term residence, or local naturalization rules.
• Children with parents of different nationalities.
• Accidental Americans who may have U.S. citizenship but have lived most or all of their lives outside the United States.
• People who are unaware that they possess another nationality under the laws of another country.

This last category is important. Nationality law is not always intuitive. A person may acquire citizenship automatically under the law of a parent’s country, even if they have never lived there or applied for a passport.

Why Experts Say This Bill Is Unlikely to Become Law

The Exclusive Citizenship Act has drawn criticism from legal experts, migration specialists, civil rights advocates, and Americans abroad. The concerns are not only political; they are also constitutional, practical, and administrative.

1. Constitutional concerns

The proposal would likely raise serious constitutional questions. U.S. Supreme Court case law has historically placed strong limits on the government’s ability to take away U.S. citizenship without a person’s voluntary action and intent.

For that reason, any automatic loss of citizenship under S.3283 would almost certainly be subject to legal challenge if the bill were ever enacted.

2. Enforcement problems

There is no simple way for the U.S. government to know which U.S. citizens also hold another nationality. Dual citizenship often depends on foreign law, and foreign governments do not all define, record, or share nationality information in the same way.

Enforcement would likely take years, cost a great deal of money, and depend heavily on self-reporting. That creates a risk of inconsistency and unequal treatment.

3. Impact on families and children

Many children hold more than one nationality automatically. A child may be American through one parent and a citizen of another country through the other parent. Some families may also depend on dual nationality for residence rights, education, healthcare access, inheritance, or the ability to live together in the same country.

A forced choice between nationalities could create serious practical and emotional consequences.

4. Risk of discrimination or political misuse

Critics also warn that a law restricting dual citizenship could be used in ways that disproportionately affect Americans living abroad, naturalized citizens, immigrant families, and people with ties to specific countries.

For Americans overseas, the concern is not only legal. It is also personal: many Americans abroad live normal cross-border lives, with family, work, property, and obligations in more than one country.

Important Tax Consideration: Citizenship and Tax Liability Are Not the Same

The current proposal concerns nationality. It does not, by itself, rewrite U.S. tax law.

This distinction is important. Renouncing U.S. citizenship, losing U.S. citizenship, or being required to choose between nationalities would not automatically make past U.S. tax obligations disappear.

For U.S. tax purposes, citizenship status and tax compliance are related but separate issues. In many cases, a person who gives up U.S. citizenship must still consider whether prior U.S. tax returns were filed correctly, whether Form 8854 is required, and whether FBAR or FATCA-related reporting obligations apply for earlier years.

Possible expatriation tax consequences may also depend on the person’s individual financial and filing history. This is why it is important not to make assumptions based only on nationality status.

If you are unsure about your U.S. tax compliance, Americans Overseas can help you review your situation and clarify your options.

What Does This Mean for You as an American Living Abroad?

For now, nothing changes regarding your status as a U.S. citizen.

You do not need to give up a nationality. You do not need to file any new form because of this bill. You do not need to prepare for an immediate deadline. Dual citizenship remains legal under current U.S. law.

Americans Overseas continues to monitor developments surrounding the Exclusive Citizenship Act closely, factually, and without speculation. We will notify our community if there is any official movement in the legislative process.

Statement from Linda Mabelis:

“Daan Durlacher, co-founder of Americans & Expats Overseas, personally experienced the effects of similar laws in the past. At that time, you automatically lost your U.S. citizenship if you held a second nationality or, for example, served in the military in the Netherlands. This new Exclusive Citizenship Act follows a similar ‘America First’ line of thinking, but the impact would be enormous. Lawmakers often fail to consider the realities of Americans living outside the United States.”

What Should You Do Now as a Dual Citizen?

At this stage, the most important thing is to remain calm. The Exclusive Citizenship Act is not law and is only at the beginning of the legislative process.

You should not renounce a nationality because of this proposal alone. You should not assume that a proposed citizenship law changes your current U.S. tax obligations. And you should be careful with speculation on social media, where legal and tax issues are often presented too simply.

What you can do now is make sure you understand your own situation. If you are a U.S. citizen living abroad, it is useful to know:

• whether you are considered a U.S. person for tax purposes;
• whether you are up to date with U.S. tax returns;
• whether you have FBAR or FATCA reporting obligations;
• whether you have ever considered renunciation and what that would mean from a tax perspective;
• whether you may be an Accidental American.

If you have questions about your personal situation, Americans Overseas can help you clarify your options.

What Can You Do Now?

At this stage, the most important thing is to remain calm. The Exclusive Citizenship Act is not law and is only at the beginning of the legislative process. It is advisable to follow updates exclusively through reliable sources—such as Americans Overseas or official government websites—so that you are not influenced by speculation or misinformation circulating on social media.

If you have questions about your personal situation or want clarification, you are always welcome to contact Americans Overseas. We are here to support and guide you as the situation evolves.

Contact us for more information

Sources:

• Exclusive Citizenship Act
• Statement on Senator Moreno’s Unconstitutional Citizenship Proposal
• Travel state dual nationality
• Forbes: Exclusive Citizenship Act