then to the international presidency of the youth wing of the European Movement and of the Union of European Federalists, the Young European Federalists (JEF), a post he held from 1979 to 1981, drafting their manifesto, which was the first to coin the phrase "democratic deficit" in relation to the European Parliament's then lack of power over European legislation. Corbett was secretary-general of the European Co-ordination Bureau of International Non-Governmental Youth Organisations from 1977 to 1981, representing youth organisations in the Council of Europe's European Youth Foundation and European Youth Centre. He also helped to set up the Youth Forum of the European Communities, the predecessor of the European Youth Forum, and represented Western European youth organisations in negotiations with Eastern European organisations pursuant to the Helsinki Treaty (as well as at the World Festival of Youth and Students in Havana in 1978, along with Charles Clarke and Peter Mandelson). He worked with Altiero Spinelli MEP on the latter's proposal for a draft treaty establishing a European Union, adopted by the European Parliament in 1984. Before being elected to the European Parliament, Corbett worked in the voluntary sector and as a civil servant, later becoming a policy advisor to and then Deputy Secretary General of the Socialist Group in the European Parliament. He worked on drafting the parts of the treaties of Maastricht and Amsterdam that increased the powers of the Parliament, notably helping to draft the "codecision procedure" which now applies for adopting European legislation through successive readings of the Parliament and the Council. In 1992, Corbett was made Ambassador of Goodwill of the US State of Arkansas, by its then Governor Bill Clinton. First Period as a Member of the European Parliament Corbett was a member of the Parliament's Constitutional Affairs committee and from 1999 to 2009 was the spokesman for the Labour Party, as well as the whole of the wider Group of the Party of European Socialists, on European constitutional affairs. In 2006, he was elected Deputy Leader of the European Parliamentary Labour Party, which he remained until the end of his first period as an MEP, declining (to some surprise) to challenge for the leadership when Gary Titley stood down in 2008. In 2003, his proposals to re-write the European Parliament's Rules of Procedure were largely accepted. In 2004–2005, he was the co-rapporteur (with Iñigo Méndez de Vigo) for Parliament on the Treaty establishing a