欧盟公民为实现欧盟内的自由迁徙 ,取消原针对欧盟成员国公民的居留许可审批规定 ,将来只保留欧盟成员国公民在注册机关的注册义务———与德国公民相同 ,欧盟公民注册后将获得一份居留权证明。欧洲法律规范的统一欧洲《关于保障过渡性保护和认可其他成员国追溯决定的法规》 , EU citizens in order to achieve the freedom of movement within the EU to cancel the original EU member states for the residence permit approval requirements in the future only to retain the EU member states registration authority registration obligations --- the same as the German citizens will be obtained after the registration of EU citizens A certificate of residency. Harmonization of European legal norms European regulations on safeguarding transitional protection and ratifying retroactive decisions of other member states,