It is perhaps obvious to state that terrorists cannot plan and carry out attacks in the United States if they are unable to enter the country. Yet prior to September 11, while there were efforts to enhance border security, no agency of the U.S. government thought of border security as a tool in the counterterrorism arsenal. Indeed, even after 19 hijackers demonstrated the relative ease of obtaining a U.S. visa and gaining admission into the United States, border security still is not considered a cornerstone of national security policy. We believe, for reasons we discuss in the following pages, that it must be made one.
