Restrictions on U.S. aid to Bolivia for crop development competing with U.S. agricultural exports and their relationship to U.S. anti-drug efforts : statement of Allan I. Mendelowitz, Director, International Trade, Energy, and Finance Issues, National Security and International Affairs Division, before the Committee on Agriculture, Subcommittee on Department Operations, Research and Foreign Agriculture and Subcommittee on Wheat, Soybeans, and Feed Grains, House of Representatives / U.S. General Accounting Office