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Immigration and border protection policies are driven by national interest. However, the national interest can be more broadly and more narrowly conceived, depending in part on the degree to which the future of the individual state is understood to be contingent on a shared global future and on the recognition that the short-term costs of international cooperation may bring long-term collective benefits. Whereas such global interdependence is recognised in international statecraft in the domains of aid, trade and climate change, such recognition does not extend to immigration. Australia's national policies towards human movement from the Global South tend to be driven in large part by exaggerated fears (of unregulated border crossings) or a narrowly instrumental approach to the economic benefits of human capital transfers (migrants filling skills gaps and providing flexibility in the labour market). A broader conception of migration would take into account the potential developmental benefits of human movement for source nations and for migrants themselves. [ABSTRACT FROM AUTHOR]