The least developed countries rely on preferential market access. To benefit from these preferences, proof of sufficient transformation must be provided to customs in importing countries by meeting the rules of origin requirements. These rules of origin are complicated and burdensome to...

The effective market access granted to textiles and apparel under the North American Free Trade Agreement (<EM t="s">nafta</EM>) is estimated, taking into account the presence of rules of origin. First, estimates are provided of the effect of tariff preferences combined with rules of origin on the border...</em>