Like the Irish? Or the Chinese? Or the Italians? They came here as pioneers? Or did they come looking for something better than what they were offered? Remember, we treated them like shit too. Maybe hating immigrants is a corner-stone of America...
There are opportunists everywhere. I'm sure not everyone coming from our southern border is going to be someone I want in my neighborhood but that doesn't mean so many people aren't just looking for an escape from danger. Would you break a law to save your own life? To protect your family? Is penalizing people in these circumstances truly just? Does it make you a good person?