Although it might be true that immigrants might be harmed by repatriation in some cases, the majority of illegal immigration takes place because of economic reasons, and those people can return safely. The United High Commissioner for Refugees (UNHCR) sets the conditions for voluntary repatriation on the grounds of legal (absence of discrimination, free from persecution), physical (freedom from attack, safe routes for return) and material (access to livelihoods) safety1. If this is not the case, these people should be given temporary asylum. Victims of trafficking are usually given special protection, as is the case with the EU, which also imposes tough rules on criminals involved2.  1 Refugee Council Online, "Definitions of voluntary returns", accessed 31 August 2011  2 European Commission, "Addressing irregular immigration", 30 June 2011, , accessed 31 August 2011