Dual citizenship: can you keep your original nationality?
One of the most common worries before naturalizing is whether becoming American means losing the country you came from. The short version is reassuring: the United States generally allows dual citizenship, and the real question is what your birth country does, not what the U.S. requires.
The U.S. side: dual citizenship is generally allowed
The United States does not require you to formally give up your prior citizenship in order to become American. Naturalizing does not, by itself, force you to choose one country over the other, and U.S. law recognizes that a person can be a citizen of more than one nation at the same time. For most applicants, this means you can add U.S. citizenship without the U.S. asking you to subtract anything.
This is a long-standing reality, not a loophole. The U.S. government does not ask new citizens to hand over their old passport, and it does not contact your home country to report that you have naturalized. From the American point of view, holding two citizenships is simply something many of its citizens do, and nothing in the naturalization process is designed to strip you of the nationality you were born with.
What the Oath actually means
The Oath of Allegiance you take at your ceremony does include words about renouncing allegiance to any foreign state or sovereignty. When people first read that line, it can sound like a demand to abandon their other citizenship on the spot. In practice, that is not how it works.
The U.S. does not require you to surrender your other passport, file paperwork with your old country, or take any active step to renounce your other nationality as a condition of the oath. The language is a statement of loyalty to the United States, not an enforced act of giving up another country. You can mean every word of it and still legally remain a citizen of the country where you were born.
The real constraint is your other country
The limiting factor is almost always the law of your birth country, because each nation decides for itself whether to let its citizens hold a second nationality. Some countries fully allow it and you keep both without any problem. Others automatically treat you as having lost your original citizenship the moment you naturalize abroad, and a few require you to formally renounce before or after.
A couple of neutral examples show the range. China does not recognize dual nationality, so a Chinese citizen who naturalizes elsewhere is generally treated as having lost Chinese nationality. India also does not allow dual citizenship, but it offers Overseas Citizen of India (OCI) status, which gives many of the practical benefits without being full citizenship. Because these rules vary widely and change over time, the only reliable move is to confirm your own situation with your home country embassy or consulate.
Living with two passports day to day
Holding two citizenships comes with a few practical habits. When you travel, you will generally enter and leave the United States on your U.S. passport, while you may use your other passport to enter the country that issued it. Carrying both, and knowing which one to show where, keeps border crossings simple and avoids confusion about your status.
Taxes are the part people most often overlook. The United States taxes its citizens on worldwide income no matter where they live, so being a dual citizen abroad does not remove your U.S. filing obligations. On top of that, some home countries restrict things like voting, holding certain jobs, or owning property for people who have naturalized elsewhere, so it is worth knowing both sets of rules before you assume nothing has changed.
The bottom line for most people
If your main fear is that the United States will force you to renounce the country you love, you can set that worry down. On the U.S. side, becoming a citizen generally does not require giving up your old nationality, and no one will ask you to physically surrender another passport. The Oath sounds dramatic, but it does not, by itself, end your other citizenship.
The honest answer is that your homework lies with your birth country, not with Washington. Find out exactly how your country treats citizens who naturalize abroad, and plan around that. For a great many new Americans, the result is that they get to be fully American and still keep a real, legal tie to where they came from.
This is general information, not legal advice. Confirm your home country rules with its embassy or consulate, and U.S. details at uscis.gov.