For people living in the US who want to connect with their roots, citizenship in both countries is possible. In order to be eligible for Lithuanian dual citizenship, (citizenship in Lithuania, and the U. S), one must prove they have the right documents How is this done? It is necessary to perform genealogical research into your ancestors to know if you have Lithuanian relatives. If you had an aunt, uncle, parent, or grandparent who held Lithuanian citizenship you may be able to qualify for citizenship. There are some things you will need to know for your research such as