Sen. Bernie Moreno (R-OH) has introduced legislation to prohibit Americans from holding dual citizenship. The Ohio Republican’s bill, called the Exclusive Citizenship Act of 2025, would require any U.S. citizen who has foreign citizenship to choose between the two countries. Moreno was born in Colombia and renounced his Colombian citizenship. “One of the greatest honors of my life was when I became an American citizen at 18, the first opportunity I could do so,” Moreno said. “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,” he continued. Senator Bernie Moreno (R-OH) introduced a bill that bans Americans from holding dual citizenship. It’s called the “Exclusive Citizenship Act of 2025” pic.twitter.com/unE8jm4hQG — Politics & Poll Tracker (@PollTracker2024) December 1, 2025 Fox News has more: The legislation would require that the State Department and the Department of Homeland Security (DHS) create databases and rules to track and enforce the change in citizenship law. It would give Americans with dual citizenship one year after its enactment to either write to the secretary of state for a renunciation of their foreign citizenship or notify DHS of their intent to denounce their U.S. citizenship. If a person does not comply with the change within the year, they will automatically be considered to have relinquished their U.S. citizenship. And for those who do give up their U.S. citizenship, voluntarily or involuntarily, the DHS and attorney general will be required to ensure that those people are “appropriately recorded in Federal systems and treated as an alien for purposes of the immigration laws,” according to the bill text. “America First and America Only,” Moreno wrote on X. It was an honor to pledge an Oath of Allegiance to the United States of America and ONLY to the United States of America. America First and America Only. It's time to end dual citizenship for good.https://t.co/acSU52BrAs — Bernie Moreno (@berniemoreno) December 1, 2025 WKBN noted: If passed, the bill would take effect 180 days after enactment. Multiple Supreme Court cases have been instrumental in establishing dual citizenship as a constitutional right, including Talbot v. Jansen (1795), which ruled that U.S. citizens who acquire foreign citizenship do not have to waive their U.S. citizenship, and Afroyim v. Rusk (1967), which ruled that a U.S. citizen cannot lose their citizenship unless they willingly surrender it. While the U.S. government doesn’t keep statistics on dual citizens, it’s estimated that over 40 million Americans, many of whom are Mexican-Americans, are eligible for dual citizenship, according to International Living. Read the full bill below: