Even if they are not deported, in practice, stateless persons find themselves without the right to be readmitted to her/his country of residence despite their right to return to their “own” country as guaranteed under article 12(4) of the International Covenant on Civil and Political Rights. This makes it difficult for them to cross international borders unless their right of reentry has been secured. Stateless persons often lack identification documents which places them at a disadvantage in pursuing economic, social, and cultural rights such as in education, employment, and social services. They can be subject to unnecessary risks of detention- a grave problem in securing their political and social rights. They also face a high risk of discrimination, which has a negative effect on the establishment of their identity. By lacking support from a government, stateless persons are placed at a disadvantage for various rights, but their plight is aggravated if they do not have a stable resident status, which in most countries also entails enjoyment of many rights. Obtaining such a status will generally therefore address many concerns stateless persons face in their daily lives, although only acquisition of a nationality will fully resolve their situation. Migration can also lead to statelessness. The progress of globalization has increased the flow of people across borders to countries which offer better opportunities, be they industrialized or developing nations. In these countries, aliens are treated in accordance with their residence status. While skilled experts and their families enjoy relatively free travel across borders regardless of nationality, unskilled workers and their families find traveling difficult. They are often left with no choice but to resort to irregular ways to enter or stay in a country which is not their own. Furthermore, many migrants do not possess documentation; their documentation is lost, stolen, taken away during migration or they sometimes make use of false documents in order to enter another country. This causes trouble in proving identity and consequently their nationality. Even when they are deported, the country of origin may not accept them due to unidentifiable nationality. In this case, the subject needs to clarify the nationality of her/his country of origin. Thus, undocumented migrants may be at risk of statelessness, in particular where several generations have been living in the host country. 16