The United States Immigration and Naturalization Service (INS), now referred to as Legacy INS, ceased to exist under that name on March 1, 2003, when most of its functions were transferred from the Department of Justice to three new components within the newly created Department of Homeland Security

United States Department of Homeland Security

The United States Department of Homeland Security is a cabinet department of the United States federal government, created in response to the September 11 attacks, and with the primary responsibilities of protecting the territory of the United States and protectorates from and responding to...

, as part of a major government reorganization following the September 11 attacks of 2001. These three components include U.S.