This man has had ample opportunity to become legal including the amnesty of Reagan offered in 1986. He chose to not become an American citizen, get in line behind the rest. There are plenty who would love to be citizens and were not given the opportunity he has.
So there he is at that time, with kids aged 4, 6, 7 perhaps, and you think he should step up and risk their future by toeing the line that he thinks, as best he can tell, he can avoid forever. You see yourself sitting in your living room watching the kids playing on the floor and you think you're going to go turn yourself in the next day?
Now no question he owes back taxes, but I am pretty sure most freepers in that paragraph above are not going to speak up.