Nonsense. If I offer him wages that are too low, he'll simply go somewhere else. It is a two-way street. What's "fair" is what the employee and employee agree to do. It's called the law of supply and demand.
Where, Mexico? LOL!
Illegals break the local prevailing wage everywhere they go, and that's the central fact of the matter. You wouldn't hire these guys if they weren't hiring out to you cheap.
But if fifteen of them started businesses in direct competition with you, and suddenly your top line went to hell, you'd be screaming bloody murder about "gypsies" and "fly-by-night contractors/sellers/providers". Try another, your self-interest isn't a basis for public policy.
That "what's good for General Bullmoose" stuff won't fly on immigration. We're talking about the future of the country.
The Victorian commissions that found abuses in the coal pits of England -- malformed children working 18" high seams, whole families coming to the pits to work before dawn and going home after dark, starvation wages, zero safety -- disagreed with you 175 years ago, and civilized society as a whole continues to disagree with you as you continue to try to play your "iron hand" stuff with people who have few choices and, absent a strong labor organization, are subject to your manipulation and short-changing, which are based in your ability to play workers off against each other in an unbalanced buyer's market in labor.
Tell me another.