Look up the “theory of American exceptionalism”. In short there is a very strong belief here that America is one of a kind and things that may work for others simply don’t apply here.
Explains why the US stocks a 12hr clock, messed up month/day/year mission, imperial measurement and a ton of other things that any foreigner will find anywhere from quirky to infuriating.
IMHO the exceptionalism theory is a b.s. lazy way of keeping things conservative and unchanged and shutting down any discussion of uncomfortable progress.