What is this?
The Congress Birthplace Tracker is an interactive database of every member of the US Congress who was not born in the United States — naturalized citizens who immigrated to America and went on to serve in the House of Representatives or Senate. For each member, we identify their birth country and investigate a critical question: does that country allow people who were not born there to vote in elections or serve in its own congress or parliament?
The United States has a long tradition of welcoming immigrants into the highest levels of government. But many of the countries these lawmakers came from do not extend the same rights to non-native-born residents. This tracker highlights that contrast — spanning from the 1st Congress in 1791 to the present day.
Key numbers
- 125 foreign-born members currently serve in Congress
- 38 different birth countries are represented
- 64 serve in the House, 61 in the Senate
- 14 birth countries ban non-citizen voting entirely
Data sources
Member data is compiled from official Congressional records, the Biographical Directory of the United States Congress, and verified news sources. Voting rights policies are researched from each country's electoral commission, constitutional texts, and comparative democracy indices.
Data is periodically refreshed by cross-referencing multiple official sources to flag any changes to Congress membership or foreign voting laws.
What do the voting status categories mean?
We classify each birth country by whether it allows non-native-born residents to participate in its democratic process:
- Banned — non-citizens cannot vote or hold legislative office at any level
- Partial — limited rights exist, typically restricted to local or municipal elections; non-native-born residents cannot serve in the national legislature
- Allowed — broader rights for non-native-born residents to vote at the national level or serve in parliament/congress
- No functioning elections — the country lacks competitive democratic elections, so the question of non-citizen voting rights is moot
Technology
Built with Next.js, Tailwind CSS, Chart.js, and react-simple-maps. Deployed on Vercel.
Disclaimer
This tracker is an independent informational resource and is not affiliated with the US government, any political party, or any foreign government. While we strive for accuracy, voting laws change frequently — always verify with official sources for legal purposes.
Contact
For questions, corrections, or feedback, reach us at: ankitcts.us@gmail.com
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