While specific events are unpredictable, most experts expect to see a continued rise in migration for the coming decade. In addition to the economic and cultural issues facing countries dealing with mass migration, the coming years will then bring other, newer problems, such as illegal immigration. Dealing with the terrorist attacks of 9/11 and EU enlargement will also pose significant challenges to migration policy. Meanwhile, growing world economic disparity will serve to intensify push and pull factors.
In response, both developed and developing countries will be forced to craft migration policies that address security, economic, and humanitarian concerns. Some commentators have therefore called for a worldwide coordinated effort, including a new international migration agency.