US Navy ships in the territory of Hawaii were bombed but the island was not “invaded”. You are right that the Philippines was invaded, and was at the time a US

US Navy ships in the territory of Hawaii were bombed but the island was not “invaded”. You are right that the Philippines was invaded, and was at the time a US territory. But it was at that point under a government intended to transition it to independence. See https://en.wikipedia.org/wiki/Hare–Hawes–Cutting_Act https://en.wikipedia.org/wiki/Hare–Hawes–Cutting_Act From what I can tell (this was decades before my birth and I have not extensively studied it, so I probably have an oversimplified impression) for mainland Americans, the Philippines was not really considered to be part of the country in the same way as, say, Illinois or Texas, and Filipinos were not considered to be Americans in the same way. (e.g. after WWII the Congress voted to strip benefits from Filipino veterans https://en.wikipedia.org/wiki/Rescission_Act_of_1946 https://en.wikipedia.org/wiki/Rescission_Act_of_1946) I’m sure the US wanted to maintain some navy and trade presence there though. The Japanese also occupied the Aleutian islands of Kiska and Attu (part of Alaska territory). But it’s hard to imagine that people 3000 miles away in, say, Oregon were worried that the Japanese would be imminently launching an amphibious assault from there.