Preface / Kenneth W. Thompson -- Introduction / Kenneth W. Thompson -- I. Historical Dimensions. 1. The Influence of the U.S. Constitution on Latin America / Kenneth Maxwell. 2. Latin American Constitutionalism / David Jordan -- II. Varieties of Constitutionalism: Some Explanations. 3. The Success of Constitutionalism in the United States and Its Failure in Latin America: An Explanation / Keith S. Rosenn. 4. Differential Impact of American Political and Economic Institutions on Latin America / Javier Alcalde -- III. The Struggle for Democracy. 5. Ideas and Interests in the Struggle for Democracy in Latin America / Martin C. Needler. 6. Lessons of the Chilean Transition to Democracy / Harry Barnes. Concluding Observations / Kenneth W. Thompson -- App.: Chances Missed in El Salvador / Murat Williams.