the US may have gone to the Moon 50+ years ago but a lot has changed. There's no big enemy to rally behind as we manufactured in the Cold War. We don't have titans of industry anymore. We have titans of finance who coast on the inertia of early successes while raising prices, cutting costs and engaging in rent-seeking behavior.
There are serious design issues with Starship as a platform for going back to the Moon.
I'm not at all convinced the US can build anything anymore.