That's the way it works in a nation governed by law. We are a nation of laws. If you don't like a law, you get it changed. You don't break it at your whim.
The reason the law hasn't been changed is the VAST MAJORITY OF THE AMERICAN PEOPLE KNOW ILLEGAL IMMIGRATION IS WRONG AND ARE VEHEMENTLY AGAINST IT.
In America, capitalism does not, and should not, come before the law. Such a perversion of law enforcement is the same argument made by drug dealers and other organized criminals. Any criminal, from petty thief to corporate fraud, can argue he had to break the law to make ends meet.