In the 70’s several ranchers wives brought the wives of their Mexican hired help to our shop. We visited while they shopped - except when she had to go read the cards to them - and according to her, they had to go to the border to pick up their workers, with proper documentation, and after the period they were hired for, return the families to the border for return to Mexico. They were also responsible for the workers and their families, while they were in the United States.
Worked pretty darned good!
I miss the rule of law. Obama's behavior is a huge step in the wrong direction, but we were already on that path decades ago. I hope we will return to following written laws before it is too late.