I don't mean to bust your bubble, but i keep hearing this statement made continuously and it is disingenuous.
The border crossings did spike, but they spiked because of the use of the "Amnesty word" which did not come from Bush. it came from the detractors of the "guest worker program and from nowhere else.
Once the press picked up on it, and printed that word in virtually every story, now numbered in the thousands for the past two years, it is no wonder that people in Mexico have erroneously come to the conclusion that amnesty will be enacted shortly and they better get moving or they will lose the opportunity.
But we both know that just ain't so, don't we?
It happened because changes were being discussed and the border was not secure.