The Office of Immigration Statistics recognizes the importance of protecting the identity of individuals included in the data used to generate tabulations, reports, and other research. For more information, read OIS's disclosure policy.
Additional information about the disclosure policy of the Department of Homeland Security is available from the Department's Privacy Office Web site.
Definition of Terms
Access our definition of terms.
Region and Country of Birth
The Office of Immigration Statistics categorizes countries into specific regional groups. See a list of countries included in each region.
- Recent Immigration-Related Legislation (USCIS.gov)
- Immigration and Naturalization Legislation from 1790 to 1990 (USCIS.gov) (PDF, 5 pages - 61 KB)