 A Mexican atomic scientist, José Rafael Bejarano, worked on the secret Manhattan Project that developed the atomic bomb.In Mexico and throughout Latin America, Franklin Roosevelt's "Good Neighbor Policy" was necessary at such a delicate time.Much work had already been accomplished between the U.S. and Mexico to create more harmonious relations between the two countries, including the settlement of U.S. citizen claims against the Mexican government, initially and ineffectively negotiated by the binational American-Mexican Claims Commission, but then in direct bilateral negotiations between the two governments.