According to an opinion of the Court of Justice of the European Union (ECJ) in Luxembourg, the original NAFTA was a so-called mixed agreement. The opinion was requested by the European Commission, which wanted to confirm whether the EU institutions alone were empowered to conclude the agreement without each member state being a party to the agreement.  The ECJ`s opinion led the European Commission to divide the agreement into a free trade agreement and an investment protection agreement. (c) capacity-building in the negotiation and implementation of multilateral environmental agreements; 6. The Parties agree to negotiate, upon request, the conclusion of an Agreement between the Union and the Republic of Singapore on the readmission of nationals of the Republic of Singapore and the Member States, nationals of other countries and stateless persons. These agreements will facilitate deeper EU engagement and expand our cooperation. Industry groups have argued that improved economic performance in these sectors will only raise standards in participating countries and that EU trade agreements should go hand in hand with efforts to harmonise environmental legislation.  5. welcomes Singapore`s signing of the Multilateral Competent Authorities Agreement (MCAA) on the implementation of the global standard for the automatic exchange of information for tax purposes on 21 June 2017 and its notifying the OECD on 30 June 2017 of its intention to activate automatic exchanges with all EU Member States under this Agreement; for which there is no bilateral agreement for the same purpose; calls on the parties to make full use of the provisions of the PCA on tax cooperation; 2. . .