If you are OK with US isolationism, then your fun fact is very salient.

If you'd like to keep the US-led coalition of mostly free countries intact, then your concept of the US military needs must include a lot more activity that just "defending from a hypothetical invasion of North America by Old World powers". Defense of allies elsewhere, keeping trade routes on the ocean open and safe.

I think the fiascos around tariffs demonstrated quite nicely why glorious autarky is no longer an option. Too much stuff is produced elsewhere, from resources to highly specialized products like icebreakers.