To what extent do national borders and national currencies impose costs that segment markets across countries? To answer this question the authors use a dataset with product-level retail prices and wholesale costs for a large grocery chain with stores in the United States and Canada. They...

Why do borders still matter for economic activity? The reunification of Germany in 1990 provides a unique natural experiment for examining the effect of political borders on trade both in the cross-section and over time. With the fall of the Berlin Wall and the rapid formation of a political and...

This paper presents some of the many issues involved in the granting of an amnesty to illegal immigrants. Complementing studies by Chau (2001, 2003), Karlson and Katz (2003) and Gang and Yun (2006), we consider government behavior with respect to allocations on limiting infiltration (border...