Final answer:
The INS was reorganized in 2003 and became part of the Department of Homeland Security, which was established to centralize control over government functions for improved national security and emergency response.
Step-by-step explanation:
The INS, or Immigration and Naturalization Service, was reorganized in 2003 and became incorporated into the Department of Homeland Security. Following the attacks of September 11, 2001, there was a significant restructuring of federal agencies focused on domestic security, which led to the creation of the Department of Homeland Security. This new department centralized several government functions to enhance control over threats within the United States, and the reorganization included absorbing the functions of the former INS.
With a broader mandate for national security after 9/11, the newly established Department of Homeland Security took over various agencies that were previously independent or part of other departments. This reorganization aimed to address chronic issues such as the lack of cooperation among federal law enforcement agencies and improve the nation's ability to respond to emergencies, as evidenced by the criticisms of FEMA's response following Hurricane Katrina. The integration of the INS into the Department of Homeland Security exemplifies an ongoing effort to strengthen law enforcement and streamline processes related to immigration and border security.