Home > West's Encyclopedia of American Law > Dual Nationality

An equal claim, simultaneously possessed by two nations, to the allegiance of an individual.

This term is frequently perceived as synonymous with dual citizenship, but the latter term encompasses the concept of state and federal citizenship enjoyed by persons who are born or naturalized in the United States.

Under INTERNATIONAL LAW, the determination of citizenship when dual nationality is involved is governed by treaty, an agreement between two or more nations.

A person who possesses dual citizenship generally has the right to "elect," or to choose, the citizenship of one nation over that of another, within the applicable age limit or specified time period. A person could be a U.S. citizen because of his or her birth in the United States and a citizen of a foreign country because his or her immigrant parents returned with their child to...