Ohio Sen. Bernie Moreno, a Republican born in Colombia, has introduced a new bill that would outlaw dual citizenship for Americans, his office announced late on Tuesday.Through the introduction of the Exclusive Citizenship Act of 2025, any person simultaneously holding US citizenship and a citizenship of another country would be required to renounce their citizenship, or that of the United States, within one year.If a person failed to renounce their foreign citizenship, this would be treated as