Prohibition on dual or multiple citizenship

(a) In general An individual may not be a citizen or national of the United States while simultaneously possessing any foreign citizenship. (b) Effect of acquisition of foreign citizenship A citizen of the United States who, after the date of the enactment of this Act, voluntarily acquires foreign citizenship shall be deemed to have relinquished United States citizenship. (c) Dual citizens (1) In general Not later than 1 year after the date of the enactment of this Act, a citizen of the United States who also possesses foreign citizenship shall— (A) submit to the Secretary of State a written renunciation of such foreign citizenship; or (B) submit to the Secretary of Homeland Security a written renunciation of United States citizenship. (2) Effect of noncompliance An individual subject to paragraph (1) who fails to timely comply with that paragraph shall be deemed to have voluntarily relinquished United States citizenship for purposes of section 349(a) of the Immigration and Nationality Act (8 U.S.C. 1481(a)). (d) Effective date This section shall take effect on the date that is 180 days after the date of the enactment of this Act.