Nature abhors a vacuum, and states are within their rights to fill the lack of effective action by the federal government. How much left of the "great wall" that G Bush II authorized billions to spend remains to be constructed - 90%? I'm not saying that was an ideal solution either, but it was finally pushed through after great resistance, and it seems that hardly any of it has been made.
I gotta wonder about some of the "stats" they've "collected"... $7.35M per DAY by only 65,000 visitors from Mexico? That's $113 per person per day - seems quite high to me as there are ~ 50,000 people from New Hampshire who travel to work in Massachusetts each day and THEY don't average anywhere near spending $113 per day in MA, and they have jobs in MA that pay over $75K/year.