Given its past colonial association and continued security and economic interests in the Philippines, the United States never was a disinterested party in Philippine politics. On June 1, 1983, the United States and the Philippines signed a five-year memorandum of agreement on United States bases, which committed the United States administration to make "best efforts" to secure US$900 million in economic and military aid for the Philippines between 1984 and 1988. The agreement reflected both United States security concerns at a time of increased Soviet-Western tension in the Pacific and its continued faith in the Marcos regime.

The assassination of Aquino shocked United States diplomats in Manila, but conservative policy makers in the administration of President Ronald Reagan remained, until almost the very end, supportive of the Marcoses, because no viable alternative seemed available. In hindsight, United States support for the moderate People's Power movement under Corazon Aquino, backed by church and business groups, would seem to be self-evident common sense. Yet in the tense days and weeks leading up to Marcos's ouster, many policy makers feared that she was not tough or canny enough to survive a military coup d'état or a communist takeover.

Data as of June 1991