Which current and recent U.S. senators have disclosed dual citizenships and when were disclosures made?
This fact-check may be outdated. Consider refreshing it to get the most current information.
Executive summary
Current reporting and candidate/legislative materials show a recent push in Congress to require disclosure or ban dual citizenship, led by Sen. Bernie Moreno’s December 2025 “Exclusive Citizenship Act” and by House proposals such as Rep. Thomas Massie’s Dual Loyalty Disclosure Act [1] [2]. News coverage and fact‑checks note that the U.S. does not keep a comprehensive registry of dual citizens and that disclosure practices for members of Congress are inconsistent; multiple outlets estimate that millions of Americans could be eligible for dual citizenship but do not document a definitive list of current or recent senators who have publicly disclosed dual citizenship [3] [4] [5].
1. Why the question matters now — a new legislative push
Republican lawmakers introduced bills in 2025 that either would require disclosure by candidates or outright seek to ban dual citizenship for Americans in federal office. Sen. Bernie Moreno introduced the Exclusive Citizenship Act of 2025 on or about December 1, 2025, which would force people to choose one nationality within a statutory period and would deem noncompliance a relinquishment of U.S. citizenship [1] [3]. Separately, Rep. Thomas Massie filed the Dual Loyalty Disclosure Act in March 2025 to require political candidates to disclose any foreign citizenships [2].
2. What the bills would change — disclosure vs. elimination
The proposals fall into two categories in current reporting: disclosure requirements (Massie) and elimination of dual citizenship (Moreno). Moreno’s bill would require declarations, give one year to renounce, and direct federal agencies to record relinquishments; critics say it runs into constitutional and administrative obstacles because the U.S. government has no comprehensive registry of dual citizens [3] [5]. The Massie bill aims for transparency by forcing candidates to disclose dual nationality status rather than automatically stripping citizenship [2].
3. What reporting says about which senators have dual citizenship
Available reporting in the provided sources lists examples of public figures who have or had ties to other countries—Sen. Ted Cruz born in Canada and Sen. Tammy Duckworth with Thai ties are noted in background reporting—but the supplied articles do not compile an authoritative, current list of senators who have publicly disclosed dual citizenship nor exact disclosure dates for individual senators [6] [7]. In short: the sources mention instances and birthplaces but do not provide an up‑to‑date roster of “current and recent U.S. senators” with formal dual‑citizenship disclosures [6] [7].
4. Limits of public records and reporters’ yardsticks
Journalists and analysts repeatedly emphasize a practical problem: the U.S. does not maintain a public registry of dual citizens, and elected officials are not uniformly required to disclose foreign citizenship on federal disclosure forms. That means researchers rely on voluntary statements, biographical notes, or media reporting to identify dual nationality—methods that produce incomplete results and differing counts across outlets [3] [5].
5. Disputed claims and fact‑checking context
Fact‑check outlets have pushed back on viral claims that new laws or administrative actions have automatically stripped dual citizens from office, noting that significant legal and constitutional barriers exist and that such wholesale removals did not occur as described in viral posts [8]. Those fact checks underline that while proposals circulate, nothing in the cited sources shows an enacted national mechanism that removes or compels disclosure of all dual citizens in Congress [8].
6. What we can reliably say now — and what we cannot
Reliable claims supported by the provided reporting: (a) Sen. Bernie Moreno introduced the Exclusive Citizenship Act of 2025 in early December 2025 and seeks to eliminate dual citizenship for Americans in law [1] [3]; (b) Rep. Thomas Massie introduced the Dual Loyalty Disclosure Act in March 2025 to require candidate disclosure [2]; (c) news outlets and analysts note the U.S. lacks a registry of dual citizens [3] [5]. What the sources do not provide: a definitive, sourced list of current or recent U.S. senators who have formally disclosed dual citizenship and the dates of those disclosures — that information is not found in the current reporting provided [6] [7].
7. Competing viewpoints and potential agendas
Supporters of Moreno’s and related bills frame them as safeguarding allegiance and preventing conflicts of interest; critics and some legal scholars call the measures ultranationalistic, constitutionally fraught, and practically unenforceable given record limitations [3] [9]. Press releases and campaign messaging emphasize patriotism (Moreno’s office), while independent analyses and fact‑checkers stress legal constraints and the rarity of any existing enforcement mechanism [1] [8] [5].
8. What a reader should watch next
Monitor congressional action on the Moreno and Massie measures, follow major news outlets for any voluntary disclosures by individual senators, and look for authoritative records from the Senate Ethics Committee or the Office of Congressional Ethics — sources the provided reporting indicates are relevant but which have not been cited here [2] [3]. Available sources do not mention a comprehensive, verified list of senators who have disclosed dual citizenship or the dates of such disclosures [6] [7].