There is no comprehensive theory of international migration, but in this chapter we review a wide range of theories organized into four major categories: those that seek to explain the determinants of the origins of migration, its continuation and directionality, the uses of migrant labor, and...

This chapter aims to lay out the basis for a sound understanding of the origins of contemporary immigration and for viable policies toward it. Here we dissect the disconnect between the public perception of immigration and the underlying realities rooted in the political economy of the nation...