The US would have to make a case to the rest of the members that it has been attacked under article 5 and the rest of the members have to agree.

There are a lot of conceivable scenarios where the US would not make the case and even where the other members might disagree.

I'm pretty sure a lot of people think NATO == US Empire and Interests. Its simply not true, and this is a pretty great example of how much disinformation and FUD certain "interests" have created around NATO.

Hawaii isn't even covered under NATO, even if someone attacked the US:

https://www.westernjournal.com/nato-loophole-attack-hawaii/