This article from the Houston Chronicle argues that a new Western Union product that allows immigrant to send money home by using their cell phones will serve to undermine the US government's current border security plans (the author disagrees with those plans, and thinks undermining them is a good thing.)
I think remittances are great, and the Western Union system looks like a great product, but I honestly have no idea how it “will make obsolete our current fortress-America insularity, cutting the ground from underneath the border structures now under construction and mocking the infrared cameras and razor-sharp wire designed to repel those hoping to make it to and make it in America.” Any guesses?