is a progression from u sing tariffs only to quotas, and to antidumping constraints (when quotas are jointly eliminated …This paper shows that governments have no incentive to introduce non-tariff barriers when they are free to set tariffs … but they do when tariffs are determined cooperatively. We then show three results. First, with trade liberalization, there …

Market access negotiations in merchandise trade at the multilateral level cover tariffs and non-tariff measures (NTMs …). While tariffs have been substantially reduced in earlier rounds, they remain high in certain areas and further reductions …