It is also a matter of national security. In this post9/11 era. it is against our national security interest to allow an open border. For instance. three of the six people that are charged in plotting to attack U.S. Army post. Fort Dix. were in the country illegally. Records show there is no record of them ever entering this country. Many of the 9/11 hijackers were in the country with expired visas. Yet. several of them still had their drivers license. It is evident that radical terrorists whose sole purpose is to destroy this Nation and our way of life are here living among us.