"Incidentally, if Mexican people are sneaking across our borders in such numbers, is population growth in Mexico itself abating?"

            A book could be written about this--and you're right, if populations were abating in Mexico, it would be a victory of sorts.

            It's not, of course, but it is slowing down. It wouldn't be slowing down at all if it weren't for the fact that the Mexican government is very serious about protecting their own borders. They don't want immigrants coming into American and sending money back to Guatemala, for instance.

            With all of those eventualities coming to pass, if America could fend off the Mexican invasion for a few more years, it seems to me like the pressure would ease.