I'm going to knock a few chips off the tip of the iceberg here. The hiring of illegals knowingly or not is the exploitation of a culture. People say all the time they can go back home and live like kings, if this is a fact why are these nations so poor. The truth is that when we hire them it keeps the natural affair of supply and demand economics out of balance. If an industry can't find labor it has no choice but to pay more to attract workers. If this had been kept in its natural state there would have been no building boom and wages would have increased attracting better people. Home cost would have gone up in balance with worker wages at a more even rate. Building an economy at a steady rate is always better than boom bust.
When these workers send their money home it comes right back here in the form of interest on loans we give there government and cheap petro. Sounds great only problem is that it keeps these people in a perpetual state of poverty. To me it's a lot like slavery; of course people in these situations are a better worker. Look at the UAE most of the labor is slaved from India. All empires do this.
As a man of the great U.S.A I have always felt I was free from the bonds of slavery. Whether this is economic, social, or governmental. I think WE the people of the U.S are a light in the world because at one time we all were slaves. For some it was labor, some religious, some government, some poverty. In our early history our resources were taken by many countries of the world. Taken by our hands from the dirt then taken from us by gun point. I will not do the same when the men before me fought so hard to rid us of these things.
USA USA USA USA!
How exactly do you propose never hiring illegal immigrants?