Identity cards can assist in the efficient monitoring of immigration  Illegal immigration is an enormous problem in Western nations. The UK estimates that there are more that one million illegal immigrants living in Britain [1] , likely around 2.2 million [2] . For America, this number could be as high as 11 million [3] . Identity cards would mean that, even if illegal immigrants did succeed in crossing the border, they would most likely be found out because they could not pass routine security checks required on an everyday basis because they would not have been issued an identity card. Given that illegal immigration is frequently linked to international crime such as trafficking [4] , this is clearly a problem which we need to address in a new way.  [1] The Times. ‘UK home to 1m illegal immigrants.’ Published 25/04/2010. Accessed from  on 10/09/11.  [2] The Times. ‘UK home to 1m illegal immigrants.’ Published 25/04/2010. Accessed from  on 10/09/11.  [3] The New York Times. ‘Number of illegal immigrants in US fell, study says.’ Published 01/09/2010. Accessed from  on 10/09/11.  [4] Accessed from  on 10/09/11.