It is obviously easier, for the short run, to draw cheap labor from adjacent pools of poverty...than to find it among one's own people. And to the millions of such prospective immigrants from poverty to prosperity, there is, rightly or wrongly, no place that looks more attractive than the United States. Given its head, and subject to no restrictions, this pressure will find its termination only when the levels of overpopulation and poverty in the United States are equal to those of the countries from which these people are now so anxious to escape.