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An official website of the United States government

国籍関係

Overview

One can become a U.S. Citizen through a variety of means—birth in the United States, birth abroad to a U.S. citizen parent, or through the naturalization process.  For all of these, a specific series of legal requirements must be met. At the U.S. Embassy and Consulates in Japan, we can provide certification of U.S. citizenship for eligible individuals born abroad to U.S. citizen parents.  We also processes Certificates of Loss of Nationality for those U.S. citizens who would like to give up their U.S. citizenship or believe that they have expatriated themselves.