Our government is more intent on removing those borders than defending them.
http://www.cfr.org/pub8138/robert_a_pastor_william_f_weld_john_p_manley_pedro_c_aspe/building_a_north_american_community_report_of_the_independent_task_force_on_the_future_of_north_america.php
This is a quote from the link that you provided. Everyone should read this document about the "North American community" that is being planned for us. The above quote is THEIR opinion on how to keep out country safe - open borders to everyone! Unbelievable!!
It appears that the North American Community is supposed to be accomplished by 2010. We have 5 years to stop this or our country will undergo a sea change.