Does Citizenship by Descent Affect My US Citizenship?
No. Claiming citizenship by descent through your ancestry does NOT affect your US citizenship in any way. The United States fully allows dual (and multiple) citizenship.
What the Law Says
The US Supreme Court ruled in Afroyim v. Rusk (1967) that US citizens cannot lose their citizenship involuntarily. Acquiring another citizenship through ancestry, marriage, or naturalization does not trigger loss of US citizenship.
What You Need to Know
- You keep your US passport — nothing changes with your US citizenship status
- You must enter/exit the US on your US passport — this is required by law
- Tax obligations continue — the US taxes worldwide income regardless of dual citizenship
- FBAR filing required — if you open foreign bank accounts, you must report them if the total exceeds $10,000
- No need to inform the US government — there is no requirement to report your new citizenship
Tax Implications
The main practical impact is tax reporting. As a US citizen, you file US taxes on worldwide income. If you also earn income in your second country, you may need to file there too. The Foreign Tax Credit and tax treaties prevent double taxation in most cases.
Read our complete 2026 tax guide for dual citizens for details.
