Well, it isn’t completely solved, but the number of arrests at the border for illegal crossings is down to its lowest level since — wait for it! — 1972. In fact, undocumented aliens, Mexican and others, are so scarce today that the old-time swarms of fruit and vegetable pickers are hard to find, and many large-scale farmers are having trouble getting their crops to market.
What accounts for this stunning change?
Part of it comes from increases in deportations, improvements in prosperity within Mexico and the general, worldwide dwindling of demand for unskilled labor. One factor, however, outweighs all the others: In 1970, the average Mexican mother bore 6.8 children. Today the average family size is 2.