The Third Amendment, passed in 1972, allowed Ireland to accede to the European Communities. In 1986, the government signed the Single European Act (SEA). However, Raymond Crotty sought an injunction against ratification by the state. In "Crotty v. An Taoiseach" (1987), the Supreme Court held that the further transfer of powers from the state to the European institutions within the SEA was not "necessitated by the obligations of membership of the Communities" as provided for by the Third Amendment. Consequently, the Constitution required further amendment, before the SEA could be ratified. This was done in a referendum later in 1987. On the same basis, further referendums on European Treaties were held on the Maastricht Treaty (in 1992), on the Amsterdam Treaty (in 1998), on the Nice Treaty (in 2001 and in 2002), and on the Lisbon Treaty (in 2008 and in 2009). Referendums were also held to the allow the State to be bound by the Good Friday Agreement in 1998, and to ratify the International Criminal Court in 2001 and the Stability Treaty in 2012.