If you are a Greek American with a U.S. and Greek passport, or if you have ever thought about applying for Greek citizenship through your parents or grandparents, you may have seen alarming headlines in recent days about a possible ban on dual citizenship in the United States.
The concern centers around a newly introduced Senate bill called the Exclusive Citizenship Act of 2025. The proposal is real. It is also one of the most extreme citizenship measures ever floated in Congress. At the same time, legal experts say it faces enormous constitutional obstacles and is highly unlikely to become law in its current form.
What the Exclusive Citizenship Act Proposes
The Exclusive Citizenship Act of 2025 was introduced in the U.S. Senate in December by Senator Bernie Moreno of Ohio. The bill is built around a single core demand: that U.S. citizens owe what it calls “sole and exclusive allegiance” to the United States.
In practical terms, the bill would do two major things.
First, it would give all current dual citizens one year to formally renounce their foreign citizenship in writing to the U.S. government. If they fail to do so within that year, the bill declares that they would be treated as having “voluntarily relinquished” their U.S. citizenship.
Second, for the future, the bill states that any U.S. citizen who later acquires another citizenship would automatically be considered to have given up their American citizenship at that moment.
To enforce this, the bill directs federal agencies to create new record-keeping systems to track who is treated as having lost U.S. citizenship under these rules. Commentators have already flagged major practical obstacles. There is no global database of citizens that the U.S. government can access. The U.S. also does not automatically receive citizenship records from Greece, Germany, or any other country. In most cases, it only knows about a second passport if a person declares it or uses it to enter the United States.
In plain terms, the proposal would force millions of Americans with more than one passport to make an all-or-nothing choice.
A Narrower House Bill Targets Politicians
A separate bill has also been introduced in the House of Representatives called the Disqualifying Dual Loyalty Act.
Instead of targeting private citizens, it would bar dual citizens from serving in the U.S. Congress unless they first renounce any foreign citizenship. Under this proposal, candidates for the House or Senate would need to prove they hold only U.S. citizenship before taking office.
While far more limited than the Moreno proposal, it reflects the same political theme and has drawn support within parts of the Republican caucus as a national security measure. Its future is uncertain, but it shows how the issue of dual citizenship is now being pulled directly into electoral politics.
Why Greek Americans Are Watching This Closely
For many Americans, dual citizenship is an abstract legal idea. For Greek Americans, it is often deeply personal.
Thousands of families in our community hold, or are eligible for, Greek citizenship through descent. Many apply so they can work in the EU, retire in Greece, reconnect with family property, or simply formalize a lifelong cultural bond.
The issue also intersects directly with Germany. Since mid-2024, Germany has modernized its citizenship law to openly allow dual and multiple citizenship. Greek Germans, Greek Americans living in Germany, and descendants of the postwar Greek labor migration have all begun using those new rules to secure citizenship without giving up existing nationality.
Under the Moreno bill, a Greek American who applies for Greek citizenship, or an American living in Germany who naturalizes there, would immediately be treated as having lost U.S. citizenship.
For families shaped by migration, this creates an emotional and legal collision between countries that are all part of everyday life.
The Tax and Legal Trap Many People Do Not See Coming
One of the least understood side effects involves taxes.
Under existing U.S. law, some people who relinquish citizenship are treated as “covered expatriates” and may face an exit tax on their worldwide assets. This applies mainly to higher-net-worth individuals (generally those with a net worth over $2 million or a high average income tax liability), not most dual citizens. Still, if a person were forced into “relinquishment” by statute rather than personal choice, it could trigger severe financial consequences in addition to the loss of citizenship itself.
There is also a deeper legal contradiction. Some countries do not practically allow their citizens to renounce nationality at all. Argentina is a well-known example. Under the Moreno bill’s logic, an Argentine-American who is legally unable to give up Argentine citizenship could still be deemed to have lost U.S. citizenship for failing to comply, even though compliance was impossible.
These contradictions are part of why the bill is widely viewed as legally fragile.
The Constitutional Wall the Bill Runs Into
Since 1967, U.S. citizenship law has been shaped by a Supreme Court case called Afroyim v. Rusk. In that ruling, the Court held that Congress cannot take away citizenship once it is granted under the 14th Amendment. Citizenship can only be lost if the individual voluntarily renounces it with clear intent.
The Moreno bill attempts to get around this by treating refusal to renounce a foreign citizenship as proof of voluntary intent to give up U.S. citizenship.
Most constitutional scholars believe this would be extremely difficult to uphold in court. Even with today’s conservative Supreme Court, the idea that Congress can retroactively strip natural-born citizens of their status by statute alone runs directly into settled constitutional law.
How Likely Is This to Become Law?
At the moment, the Exclusive Citizenship Act faces very long odds.
It would need to pass both chambers of Congress and survive almost immediate constitutional challenges. It would also require the federal government to track millions of people’s citizenship status across dozens of foreign legal systems, something it is not currently equipped to do.
For now, the more realistic danger may be political rather than legal. By placing an extreme proposal into public debate, narrower measures, such as barring dual citizens from Congress or certain government positions, begin to seem moderate by comparison.
What Dual Citizens Should Do Right Now
For Greek Americans who hold, or are considering applying for, dual citizenship, the most important thing to know is this: nothing in U.S. law has changed today.
No one is required to renounce anything. No current rights have been revoked. This is an early-stage proposal facing massive legal barriers.
Anyone making long-term plans involving foreign citizenship, international taxes, or relocation should continue to work with qualified legal and tax professionals. Avoid relying on social media speculation or YouTube commentary for legal guidance, and follow credible reporting as this develops.
A Deeper Question Beneath the Politics
For immigrant communities, dual citizenship is rarely about divided loyalty. It is about layered identity. It is about family, memory, obligation, and belonging that stretches across oceans and generations.
The idea that a person must compress that lived reality into a single legal label does not reflect how diasporas actually function. Whatever happens to this bill in Congress, the bonds that tie Greek Americans to both sides of the Atlantic will not disappear with a vote.