Words have meaning
"... but they are still slaves."
If they can quit the job they are not slaves. No matter how much someone might need the work, if they have the right to walk away and say fuck off at their discretion, they are not slaves. Underpaid. Exploited. Whatever, but not slaves. They are still free human beings unlike real slaves throughout history.
"But LOS&D don’t work when the country is flooded with cheap, illegal foreign labor who will work for pennies on the dollar..."
Of course cheap illegal immigrant labor effects S&D of all labor in the fields of work they enter. DUH! I'm not going to go through another useless attempt to explain S&D to you because as smart as you are, you just can't seem to grasp the broadness of the concept.