I doubt it that $15 dollars would help it a bit, just get more WORKERS in from elsewhere. I get a kick out of the politicians that declare they will get more people back to work, they can't even find anyone that wants to work.
Used to be that kids did all of the menial work now they just want to play on the Iphones with their thumbs and get fat and parents sure don't help. If you kept the foreign workers out of the jobs work would stop in many areas, you couldn't buy a salad and very little would get done and many places would go out of business.