We keep reading about how "frightened" illegal aliens are following last month's ICE arrests of a 1000 illegal workers. Some illegals, too worried to leave their homes, are even foregoing their taxpayer-subsized free medical care and schooling for their children. There is a lesson here: The influx of illegals rests on the presumption that we will never enforce our laws. Were we to embark on even an extremely modest enforcement campaign, we would radically change the calculations that illegals already in the country and those intending to come make about their security here. "Mass deportations" are not necessary to significantly reduce the illegal population; just a little bit of enforcement is.