“....Whether a person formally renounces citizenship or has it taken away,there is a Certificate of Loss of Nationality issued,which is a public record. http://travel.state.gov/law/citizenship/citizenship_778.html";.
Many thanks for this information!
If its a public record, how can a researcher get it?
To whom do they write?
To what web site can they go?
The process for obtaining access to a public record from the federal government is to file a Freedom of Information Act request:
http://www.foia.gov/how-to.html