California tries its best... There's a bunch of pro-consumer laws that other states don't have. There's the CCPA which is similar to GDPR (including the right to know and the right to be forgotten). You must be able to cancel a service easily online if you can sign up online. Store gift cards aren't allowed to have expiration dates. Gift cards with less than $10 on them must be redeemable for cash. Stricter laws against false advertising. And a bunch of other useful laws.

Not as good as the Australian Consumer Law, but better than pretty much every other US state.