Conclusion
Today, many of the post-9/11 initiatives, though motivated and supported by a desire to address national security concerns, have increasingly become highly effective tools to track, apprehend, and remove run-of-the-mill unauthorized immigrants who pose no security threat. This has occurred against the backdrop of an historic rise in illegal immigration.
The terrorist attacks of September 11, 2001, which caused major ripples across so many facets of American life — from defense policy and the United States' relations with other governments to the country's internal security – have played a major role in reshaping the U.S. immigration system. The system that exists today is dominated by national security and border-control considerations, a paradigm almost certain to continue for years to come.