ABSTRACT
This chapter considers the issue of state intervention in patterns of migration and mobility. Using examples, it outlines the reasons why some states elect to pursue interventionist strategies and it describes the impact of these policies upon people who are denied entry and those who are encouraged to leave. There is, of course, a thin line between vigorous encouragement on the one hand and compulsion on the other, and in many cases it can be difficult to distinguish between the two. While we acknowledge this difficulty, and the arbitrary nature of any division that might result, the current chapter focuses upon those examples of state intervention where the individual is still left with some realistic choice in whether to move or stay. It is left to the next chapter to consider cases where the element of choice is minimal or totally absent. We are therefore following Petersen's (1958) widely quoted typology of migration in which he distinguished between 'impelled' and 'forced' migrations, both of which result from state intervention.
