1. Birth,
2. Naturalization

1. In case born in any of the sates in United States of America, the birth certificate of such person is sufficient proof of he being citizen of U.S.A.
2. In case born in some other country of the wedlock of two American citizens and one of them have lived in the U.S.A for some point of time. The record of birth is registered with the consulate office of U.S.A. in that state.
3. Incase born to one of the parents is a citizen of U.S.A. then he can be a citizen provided that the U.S. citizen parent must have lived in U.S.A for at least 5 years out of which 2 years after completion of his 14 years.

CITIZENSHP BY NATURALIZATION

1. a period of continuous residence and physical presence in the United States for 5 years without leaving the country for a trip for 6 moths of longer;
2. if married to U.S. citizen then the person seeking citizenship shall have a permanent residence in U.S. for 3 years without leaving the country for a trip for 6 moths of longer
3. if came to U.S. on contract employment shall have a permanent residence in U.S. for 3 years without leaving the country for a trip for 6 moths of longer,
4. residence in a particular USCIS District prior to filing;
5. an ability to read, write, and speak English;
6. a knowledge and understanding of U.S. history and government;
7. good moral character;
8. attachment to the principles of the U.S. Constitution; and,
9. favorable disposition toward the United States.

THE OATH OF ALLEGIANCE

1. support the Constitution of the United States;
2. renounce absolutely and entirely all allegiance and fidelity to any country of origin;
3. support and defend the Constitution and the laws of the United States against all enemies, foreign and domestic;
4. bear true faith and allegiance to the same; and
5. bear arms on behalf of the United States when required by the law, or to perform noncombatant service in the Armed Forces of the United States when required by the law, or to perform work of national importance under civilian direction when required by the law.