Rules of Origin (RoO) are essential components of any preferential trade agreement (PTA) short of a full customs union. The recent proliferation of PTAs has led to increased interest in the effects of RoO with empirical estimates consistently showing that they act as barriers to intra-PTA trade....

The Everything But Arms agreement, introduced by the EU in 2001, eliminated duties on most imports from the least developed countries. To avail of these benefits, however, the exported product must contain a sufficiently large share of local content. Thus, the agreement may have affected both...