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USCIS fact sheet outlines general naturalization eligibility requirements and the list of documents often required during the naturalization interview.

USCIS recognizes the important sacrifices made by non-citizen members of the United States armed forces and their families, and is committed to processing their naturalization applications in a timely and efficient manner while providing exemplary customer service, maintaining the integrity of the immigration system, and the security of the process. Qualifying military service is generally in the Army, Navy, Air Force, Marine Corps, Coast Guard, and certain components of the National Guard and the Selected Reserve of the Ready Reserve.

The geographic mobility of lawful permanent residents (LPRs) within the United States has implications for their integration and socioeconomic achievement. Migration data on LPRs are not routinely collected by the Department of Homeland Security. However, information supplied on applications for LPR status and naturalization may be used to measure changes in the state of residence occurring between the grant of LPR status and the time of naturalization. This Office of Immigration Statistics Fact Sheet examines interstate migration among LPRs who became naturalized U.S.