The threat level in the airline sector is High or Orange. Read more.
Data Standards and Definitions
Disclosure Policy
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.
Immigration Legislation
- Recent Immigration-Related Legislation (USCIS.gov)
- Immigration and Naturalization Legislation from 1790 to 1990 (USCIS.gov) (PDF, 5 pages - 61 KB)
Download Plug-in
Some of the links on this page require a plug-in to view them. Links to the plug-ins are available below.
This page was last reviewed/modified on July 24, 2009.