Transforming Border Security: Prevention First
The events of September 11, 2001 caused the nation’s leaders to accelerate existing border programs aimed at prevention. Traditionally, the “prevention” of border violations has involved interdiction (physically impeding any incursion while it is occurring), preemption (through routine screening to intercept illegal shipments, weapons, people, or other illicit cargo), and deterrence (where an action taken means a potential violator does not plan or even attempt an illegal entry).
By Robert Bach