Why, knowing as I do that 819,000 Americans are unemployed who might get minimum wage jobs, do I look at an unemployment rate of 4.5 percent and say that it would be bad FOR AMERICA to send the 11-12 million "illegals" back? Perhaps because I know that 12 million is a much larger number than 819,000.
It really is. And it doesn't matter if that 819,000 does two jobs: they still won't replace the ones you kick out. In addition, you assume that you would have all the jobs still in place without them here.
What we see, instead, is American businesses which sell, for example, groceries in some towns with a higher hispanic population simply close when they leave because they are afraid. Those are Americans you've added to unemployment: and ones with OK jobs (I've worked at Albertson's -- it wasn't the limit of my ambitions, but it was a good job).
So as long as certain ILLEGAL behavior is good for American businesses, we should look the other way and not enforce the law, right? Maybe we should encourage rape and murder, because it helps keep the police, courtroom workers, and prison guards employed?