Using SPS measures obtained from the SPS Information Management System of the WTO and controlling for zero trade flows, we find that SPS concerns reduce the probability of trade in agricultural and food products consistently. However, the amount of trade is positively affected by SPS measures...

This paper examines some of the features of rules of origin (RoO) that makes these policy instruments nontariff measures, reflects on the causes of the longstanding deadlock in the WTO on multilateral harmonization of non-preferential RoO, and reviews recent trends in RoO included in recent...