Borders and border security are once again becoming increasingly important to the nation state. Many take a default position that our coastline is our border and that border security involves merely police, security guards and immigration or customs officials. But Australia’s geography no longer provides the physical barrier from the outside world that it once did.

This strategy provides a case study analysis of post-9/11 changes to US border security policies. It examines each of America’s different borders: the friendly northern borders, maritime borders, and the militarised southern border. It provides recommendations for Australia’s border security.