Not really accurate to say that other countries have "fixed" these with laws, many never had them in the first place. Car dependence in particular was never really a problem in Europe since the cities were already there way before cars. Not quite so for the US.

I found going to Hiroshima a fascinating example of this. Tokyo and Kyoto are all very walkable and contain few cars. Since Hiroshima was re-built after cars were already a thing (and when Japan was under US occupation), it feels very un-Japanese and more like a big US city.