Foreign Relations Between the U.S. and Latin America and the Caribbean States, 1930-1944 This link opens in a new windowMaterials documenting the political relations between the U.S. and countries of Latin America and the Caribbean. It documents the U.S. shift to maintain its influence in Latin America through Pan-Americanism, support for strong local leaders, the training of national guards, economic and cultural penetration, Export-Import Bank loans, political subversion, and more.