Enlargement of the European Union and "morally imperative", which reflected the desire of the EU to admit these countries as members, even though they were less developed than the Western European countries. Following this Romania and Bulgaria, though were deemed initially as not fully ready by the Commission to join in 2004, acceded nevertheless on 1 January 2007. These, like the countries joining in 2004, faced a series of restrictions as to their citizens not fully enjoying working rights on the territory of some of the older EU members. Bulgaria and Romania are not yet members of the Schengen area; however, their citizens can travel
Special member state territories and the European Union and Territories Association. The Outermost Regions were recognised at the signing of the Maastricht Treaty in 1992 and confirmed by the Treaty of Lisbon in 2007. The Treaty on the Functioning of the European Union states that both primary and secondary European Union law applies automatically to the outermost regions, with possible derogations due to the particularities of these territories. The Overseas Countries and Territories are recognised by the Article 198 of the Treaty on the Functioning of the European Union which allows them to opt into EU provisions on the freedom of movement for workers and freedom of establishment,