目前歐盟共同移民政策仍在發展中，但在限制移民潮的趨勢下，西班牙配合其要求而採取嚴格的移民政策。然而，大量的非法移民對國家與社會的衝擊，促使西班牙政府必須實施合法化計畫來管控這些移民者。因此，現今西班牙跟歐盟其他移民接納國一樣均處於兩難的情況，欲在遏止外來移民潮與廉價勞工需求之間保持平衡是極為困難的。 Signing the Single European Act was in order to complete the internal market, and all member states of the European Union confronted the elimination of internal border checks. Therefore, the immigration flow became the problem that the single country could not solve alone. Moreover, some member states expressed concern about the accession of Spain to the Union because of its historical ties with Latin America and geographical proximity with the Maghreb. It was feared that there would be a massive influx of new immigrants from these areas. To alleviate tensions, Spain implemented a new policy in 1985 that restricted non-European Community citizen immigration. It was more an immigration law to meet the EC standards than a true necessity, however, as Spain at that time was still an emigration country.
This study focuses on the changes of Spanish immigration policy after Spain becomes the member of EC, and analyses the development of European Union’s immigration policy with intergovernmentalism. More the economic cooperation in a certain policy will generate cooperation effects that spill over into other policy, even that involves the country’s sovereignty. It is also the issue that the scholars of regional integration try to research in the future.
European Union’s common immigration policy is still on developing, but under the restrictive rules for non-EU citizens, Spain takes the strict immigration policy accordingly. Nevertheless, a large number of illegal immigrants cause the social insecurity, the Spanish government has to carry out some regularization programs to control the migration flow. Nowadays, Spain undergoes the dilemma same as other European country, it is difficult to implement the restrictive migration policy or to meet the demands of cheaper labor force.