Supply and demand involves the number of available bodies. The low wage jobs in American are under great wage pressure, in large part due to illegal immigration. The standard in living in that group would have slid over the last 20 years to unacceptable levels, absent government subsidies, including the earned income credit, which subsidizes low wage jobs, and further encourages illegal immigration. It is not a vituous circle. We need to have an honest dialogue about that.
That's union socialists thinking where everyone is just a mathematical unit, where everyone has the exact same value and the only way a man can demand more for his labor is if he can eliminate competition from all the other units.
Employers don't care how many "bodies" are out there. The owner of a collision shop wants the best bodymen he can get and he will pay what he can afford to get someone who can take a brand new car from a dealership, repaint it a more popular color and return it to the dealership in such perfect condition that the dealership can sell it without the buyer ever knowing that it wasn't a factory paint job. He doesn't care how many "units" are out there mowing lawns.
A construction roofing contractor has deadlines to meet and needs experienced, skilled, dependable roofers who can keep up with the builders' schedule. He doesn't care how many "units" of landfill workers are out there.
There are very few jobs where skill and experience aren't important, and for those we have minimum wage laws.