As each new round of multilateral trade negotiations approaches, there is a demand for a negotiating rule that would give credit for autonomous liberalization. This Paper shows that the desirability and feasibility of such a rule depends on when it is instituted. A credit rule established at the...

This Paper proposes a new method to test the Grossman-Helpman model of endogenous protection and lobby formation. This method, which does not require outside data on lobbies or contributions, identifies politically organized industries for trade protection purposes and calculates equilibrium...