This is a Message Board Post that is gatewayed to this mailing list. Classification: Query Message Board URL: http://boards.ancestry.com/mbexec/msg/rw/7aB.2ACEAE/1052 Message Board Post: This question was asked of me and I'm not sure of the answer. If a person was born in Canada and moves to the United States and never filled out papers to become a US citizen, marries an American and lives in the US for over 80 years. If they had offsprings do they hold duel citizenship? Can anyone explain this?