The United States imports around 25% of its merchandise under some form of preferential trade agreement. This paper examines the relative impacts of these programs on the value of imports from different trading partners. We address four technical but policy-relevant issues: (1) We consider not...

What makes the work of Sachs and Warner (1995a, 1997a, 1997b, 1999) distinct from previous pessimistic arguments about the growth potential of natural resources is their reliance on econometric analysis. Our aim is to take the authors’ model specification as given, but we ask the following...