Maybe I'm naive, but this seems to have some significant problems:
1. Yes, everything costs 2x more for professional-class people, but also for working-class people. The numbers might get bigger, but the impact for those in the position to consider these terrible jobs is net nil.
2. For anything that doesn't require physical presence, the more you raise minimum domestic labor cost, the more attractive foreign labor looks, so you're also driving outsourcing.
You would absolutely have to back away from free-trade with low-wage countries for this, but in the restaurant/retail side of things it's not as big of a consideration, because not many people cross borders to do that in a country as big as the U.S. But for many industries it is absolutely a consideration (e.g. agriculture).
1. Yes, everything costs 2x more for professional-class people, but also for working-class people. The numbers might get bigger, but the impact for those in the position to consider these terrible jobs is net nil.
2. For anything that doesn't require physical presence, the more you raise minimum domestic labor cost, the more attractive foreign labor looks, so you're also driving outsourcing.