I immigrated from Ukraine in Mid 90s. In 2003 I obtained a Ukrainian passport in US because I needed a passport to travel. I used this passport once prior to becoming a US citizen. The passport was valid through 2013.
In 2006, I obtained a US passport and have traveled the world with this US passport. I’ve even traveled to Ukraine once with my US passport. When I became a US citizen I automatically thought that I renounced my Ukrainian citizenship because I pledged my allegiance to US. I also thought that I lost my Ukrainian citizenship because Ukraine does not allow a dual-citizenship. I started my federal career in 2007 and went through a basic public trust clearance process. Few years ago I went through my re-clearance for a public trust-high level job. The investigator and I discussed my Ukrainian passport. The passport was also reviewed by the investigator so he could verity that I have not used it since becoming a citizen. The adjudication went through. The investigator told me not to destroy this document because I can use it as evidence that I have not used it for foreign travel.
I don’t have any relatives in Ukraine nor do I really care about the country. I left it as a refuge and I have no connections with it. I traveled there once more than 10 years ago to see my ill grandma, who passed away a year after my visit. I have not been there ever since.
I am not applying for a different gov position with that requires a TS clearance. Should I be worried? I don’t believe that I ever had dual citizenship…but I am not sure. Please help