● Exclusive Citizenship Act of 2025 proposes Americans renounce other nationalities
● Law could impact US citizens with Nigerian dual nationality, including naturalised citizens
● Nigerian law currently permits dual citizenship for citizens by birth
A United States senator, Bernie Moreno, has introduced a bill seeking to eliminate dual citizenship for American nationals.
Currently, US law allows citizens to hold multiple nationalities without renouncing any. However, Moreno’s legislation, called the Exclusive Citizenship Act of 2025, argues that dual citizenship may create “conflicts of interest and divided loyalties.”
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“One of the greatest honors of my life was when I became an American citizen at 18, the first opportunity I could do so,” said Moreno, who is Colombian-born. “It was an honor to pledge an Oath of Allegiance to the United States of America and ONLY to the United States of America! Being an American citizen is an honor and a privilege—and if you want to be an American, it’s all or nothing. It’s time to end dual citizenship for good.”
Moreno later renounced his Colombian citizenship. If the bill becomes law, it could affect notable figures such as US First Lady Melania Trump, who holds both US and Slovenian citizenship. It would also impact Nigerians holding dual citizenship with the United States.
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According to the Department of Homeland Security (DHS), 38,890 Nigerians were naturalised in the US from 2021 to 2023, making Nigeria the only African country in the top 20 for naturalised citizens. Nigerian law allows dual citizenship for citizens by birth, enabling them to acquire or retain citizenship of another country without losing Nigerian nationality.
Earlier this year, US President Donald Trump issued an executive order aimed at denying automatic citizenship to children born in the US to undocumented immigrants. The order faced immediate lawsuits from 18 states and rights groups citing violations of the 14th Amendment and has yet to take effect.
