However, even in the jurisdictions that don't have a minimum wage exemption for tipped positions (such as Oregon), you're still socially expected to tip.
At this point, the only thing tips are good for is letting business owners pay staff less than what they would normally have to, which the staff doesn't mind because they get to evade taxes on cash tips, and they sometimes make more money than if they were to be paid a wage and didn't get tipped. The customer gets the raw end of the deal as they frequently overpay.