When local cost discovery generates knowledge spillovers, specialization patterns become partly indeterminate and the mix of goods that a country produces may have important implications for economic growth. We demonstrate this proposition formally and adduce some empirical support for it. We...

To what extent is a country allowed to regulate immigration into its territory, and thus to determine who lives there? Acts of immigration amount to changes in two distinct relationships. They amount to a change in political relationships, since the immigrant alters her political standing within...

Concerns about fairness leave champions of free trade puzzled. First, to some, talk about fairness in trade is conceptually muddled. Ideas of fairness seem tied to the image of leveling the playing field and thus concerned with equalizing background conditions, whereas trade thrives on...