Citizenship Has Constitutional and Statutory Sources
The Fourteenth Amendment states that people born or naturalized in the United States, and subject to its jurisdiction, are citizens of the United States and the state where they reside. The clause constitutionalized national birthright citizenship and overturned the core citizenship exclusion associated with Dred Scott. Congress also sets detailed statutory rules for citizenship acquired at birth abroad through U.S.-citizen parents and for automatic acquisition by some children after birth. Those rules vary by date and family circumstances, so a classroom summary cannot decide an individual’s status. Citizenship carries citizen-specific political rights, including voting in federal elections when other qualifications are met and eligibility for some public offices. Jury service can be a duty when summoned, while allegiance and civic participation accompany membership. Yet many constitutional protections use the word person, not citizen. Noncitizens possess due-process, speech, religious-freedom, and equal-protection rights in important contexts, though immigration and political-rights rules differ. Citizenship status must never be treated as a measure of intelligence, loyalty, contribution, or human dignity