The only justification for not "rushing out" is that this particular problem is self-limiting. The bankruptcy of Kalifornia will be a turning point. Arizona, I believe, has just passed a measure which will deny public benefits to illegals. Unfortunately, the Arizona liberals are blocking its enforcement.
The "attackers" in this case are not only the illegals, but the liberals who support taking the wealth created by the sweat of my brow and denying it to my children in favor of these illegals. If a thousand miles is too far, how close must the enemy be if they threaten the welfare of your children?