Could the FBI or CIA find out which members of Congress held and or currently hold dual citizenship? Or is there any other agency that can

Checked on January 19, 2026
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Executive summary

Federal records about naturalization and foreign births exist across agencies but no public, centralized roster of which members of Congress hold or have held dual citizenship; attempts to collect or require disclosure have been proposed in legislation and leave the question fragmented across privacy protections and agency recordkeeping [1] [2] [3]. Public reporting and advocacy efforts show that the path to a definitive, public list would be legal and bureaucratic, not purely technical, and would likely require new disclosure laws or agency mandates to change that reality [4] [5].

1. What the official record-keepers actually hold

Citizenship and naturalization documents are maintained by federal record holders: U.S. Citizenship and Immigration Services (USCIS) and the National Archives hold naturalization and immigration files and provide copies or search services to researchers, subject to procedures and limits outlined by those agencies [1] [6]. The National Archives specifically issues guidance on how researchers obtain naturalization records, and USCIS keeps duplicate court records and can provide photocopies for genealogical or legal purposes, showing that documentary evidence of a member’s acquisition of foreign or U.S. citizenship often exists in government files [1] [7].

2. Why there is no ready-made, authoritative public list

Major federal demographic compendia of Congress do not track dual citizenship: the Congressional Research Service and similar post-election profiles record birthplace, immigration status and demographics but historically do not include dual-national status as a tracked field, leaving a gap in public datasets [8] [2]. Even federal personnel systems noted by the Office of Personnel Management allow entry of a single citizenship country code and do not systematically publish dual-national status, complicating any effort to compile an accurate roster from existing personnel data [9].

3. Law enforcement and intelligence capabilities versus legal limits

Open-source records and agency holdings can be accessed by investigators with proper legal process, and investigative agencies can and do use documentary records when authorized, but none of the provided sources establishes that the FBI or CIA maintain or publish a comprehensive list of dual nationals in Congress; the reporting instead shows reliance on agency records and ad hoc research [1] [6]. The sources include active legislative efforts—bills like the Dual Citizenship Disclosure Act and related proposals—that would compel disclosure or reporting to ethics bodies or the Census, indicating that current transparency gaps are seen as legislative problems rather than technical ones resolvable solely by intelligence collection [3] [4] [5].

4. The political and procedural route to a definitive answer

Multiple bills in Congress have proposed forcing disclosure—either via campaign filings, congressional ethics statements, or by directing the U.S. Census Bureau to collect dual-citizenship data—demonstrating the recognized lack of a centralized administrative mechanism and the preference of some lawmakers to fix it through statute rather than clandestine inquiry [4] [3] [5]. These legislative approaches would create mandatory self-reporting or new data collection authority; absent them, the practical way to establish dual-citizen status relies on assembling public records, voluntary disclosures, and special-records requests to USCIS/NARA, each of which is constrained by privacy rules and agency procedures [6] [7].

5. Limits of available reporting and reasonable conclusions

The public sources reviewed show that documentary evidence exists in government hands and that both legislative proposals and researchers have tried to fill the gap, but they do not prove that the FBI or CIA maintain an accessible, authoritative list of which members of Congress are or were dual nationals; the available reporting frames the problem as lack of disclosure and data collection rather than an intelligence shortfall [2] [8] [3]. Therefore the most supportable conclusion from these sources is: federal records could be used to determine dual citizenship for individual members if legal process or disclosure compelled access, but as of the materials reviewed there is no public, uniform mechanism—short of passage of new disclosure laws—to produce a complete list [1] [4].

Want to dive deeper?
What federal statutes and privacy rules govern access to USCIS and National Archives naturalization records?
How have past disclosure efforts—like H.R.7484 or the Dual Loyalty Disclosure Act—fared in committee and what enforcement powers did they propose?
Which members of Congress have publicly acknowledged renouncing foreign citizenship, and how were those renunciations documented?