In President Franklin Roosevelt's inaugural address, he also promised to improve relations with Latin America by stating:
"In the field of world policy, I dedicate this nation to the policy of the good neighbor — the neighbor who resolutely respects himself and, because he does so, respects the rights of others."
FDR’s Sec. of State, Cordell Hull
Sought to ensure non-hostile neighbors south of the border and
secure Latin American cooperation in the war effort by maintaining the flow of petroleum & raw materials.