Answer
The U.S president refuses to intervene in mexico oil nationalization
Explanation
A good neighbor is someone who is nice and approachable.
Good neighbor policy was a United States foreign doctrine which was designed for the purposes of improving relations with the Latin America. This was after the United States had abandoned an aggressive and militaristic foreign policy approach to Latin America. The United state shown a successful adherence to the good neighbor policy when the Mexico nationalized all petroleum. This was In accordance with Article 27 of the Constitution of 1917, when President Lazaro Cardenas declared that all mineral and oil reserves found within Mexico belong to the nation. And by this the U.S president refuses to intervene in mexico oil nationalization.