| Many U.S. citizens -- especially first time | | | | citizenship. |
| international travelers --, are very surprised to | | | | Even an expired United States passport can be |
| learn that immigration inspectors at U.S. airports | | | | shown to CBP as evidence of citizenship, as long |
| also require U.S. citizens to go through inspection | | | | as there is no indication that the passport holder |
| upon their return from abroad. | | | | has relinquished his/her U.S. citizenship. |
| Officers of the Customs and Border Protection | | | | A spouse, minor child, or minor unmarried sibling |
| Service (CBP) are charged with maintaining U.S. | | | | may be included on the passport of a U.S. citizen |
| national security and border integrity, keeping tabs | | | | if such spouse, child, or sibling is also a U.S. citizen. |
| on what people (and goods) are coming and going. | | | | In a situation where a passport is required for |
| CBP officers, stationed at various air-, land-, and | | | | travel, a passport is valid for the reentry of the |
| seaports examine travellers seeking entry into the | | | | dependent only if accompanying the principal |
| United States. When, in the course of a traveller's | | | | passport holder. A dependent may, however, |
| review, a CBP inspector is satisfied that an | | | | present such a passport as evidence of citizenship |
| applicant for admission to the U.S. is a citizen of | | | | when returning from a place where no U.S. |
| the United States, that examination, for entry | | | | passport is required. |
| purposes, is terminated. | | | | If CBP is satisfied that the person is a United |
| Admissibility issues contained in the Immigration | | | | States citizen, even though the person may not |
| and Nationality Act (INA) are applicable only to | | | | be able to show a passport or other evidence of |
| non-U.S. citizens. Consequently, the examination of | | | | citizenship, CBP will advise the individual of the |
| a person claiming to be a United States citizen is | | | | necessity of having a valid U.S. passport. |
| limited to matters required to establish present | | | | Technically CBP would be waiving the general |
| citizenship. Once CBP is satisfied the person being | | | | passport requirement for the Department of |
| examined is a U.S. citizen, the examination is over. | | | | State. Other common documents that may help |
| CBP, howevr, has legal authority to temporarily | | | | to establish United States citizenship include the |
| detain a U.S. citizen under reasonable suspicion | | | | following: |
| that the person is involved in illegal activity. If | | | | 1) A Certificate of Naturalization, |
| probable cause to arrest the U.S. citizen cannot be | | | | (2) A Certificate of Citizenship, |
| developed within a reasonable period of time, the | | | | (3) Citizen's identification cards (Forms I-179 or |
| person must be released. | | | | I-197), |
| One issue that arises frequently is that of | | | | (4) State Department Certificates of Identity and |
| dual-nationality. Although the United States does | | | | Registration (Forms FS-225 and FS-225A), |
| not formally recognize "dual nationality"; many | | | | (5) The U.S. Coast Guard Mariner's Document |
| other countries do. It is not unusual to encounter | | | | indicating U.S. nationality ("Z-card"), |
| a United States citizen (even native born) | | | | (6) Birth Certificate showing a place of birth in the |
| possessing more than one nationality (i.e. more | | | | U.S. accompanied by good identification, and |
| than 1 passport). For example, a child born in the | | | | (7) Baptismal certificates or other forms of |
| United States to a foreign national may, under the | | | | secondary evidence of U.S. citizenship. |
| laws of that country, be entitled to its parent's | | | | Please note that according to government |
| citizenship and be included in the parent's passport, | | | | sources, most documented false claims to U.S. |
| particularly when the person is a young minor, not | | | | citizenship will be carrying birth certificates, |
| yet having his/her own passport. Under certain | | | | baptismal certificates, or both. These documents |
| circumstances, that document may be used for | | | | can often be most easily obtained, altered, or |
| identification and entry, if presented in conjunction | | | | manufactured. |
| with a birth certificate or other evidence of U.S. | | | | |