Traditional international trade models explain comparative advantage and describe aggregate gains for a country from trade and from terms-of-trade improvement but do not address the politics of international trade policy. A positive or predictive model that studies the politics of trade policy...

A major contribution of the public-choice school is the recognition by Gordon Tullock that contestable rents give rise to social losses because of unproductive resource use. Contestable rents usually are politically assigned privileges. Contestable rents can also be found outside of government...