>Everyone working 40 hours per week deserves a living wage (...)

You can earn a living wage for 40 hours a week doing anything in the US. You just can't afford a new iPhone. All the minimum wage does is makes it impossible to employ low-skill workers. So while before the minimum wage you could make a living, now you either can't make a living or you're effectively in the lower middle class.

Ask your dad or granddad what they had to go through to get you to a position where you think 15$ an hour is merely a "living wage".