It means that every business must obey the law just like everyone else. And if they don't, they should receive the full penalty of law just like everyone else.
Well, you completely ignore the real issue at hand of did they "earn" their money. That said, I agree, but it is not the responsibility of private business to deal with the immigration problem, that is the responsibility of the federal government.
What you seem to ignore is that the federal government ignores its own immigration laws, how about we start penalizing them?