That's pretty vague. I know you've travelled a bit so I'm sure you know that in the world and specifically in Central America there are no shortages to people who are in dire need. To be humane (if we can agree on what that entails) to every individual in that region who has suffered adverse circumstances would be impossible. Domestic violence is like the common cold, collateral damage or impressment from the gangs are everyday occurrences. There was an article recently from the Yale professor Paul Bloom talking about the downside of empathy and it's effect on policy. Moderation in all things. At first I thought it sounded ludicrous but I read everything he had to say and I would largely agree. Immigration is one of those areas where too much empathy can be harmful.
I think the difficult thing is that everybody is asking one another where to draw the line. Where can we say, "This over here is ok, but this over here, isn't"? It's like the determinate of the consensual age for sex. Stephen Fry did a talk at Oxford where he wondered out loud how it seems odd that a single day should make a difference in one's emotional maturity enough to determine whether they can have sex. That's all it comes down to. On one day you are 15 and, in the eyes of the law, have no ability to decide for yourself whether you should have sex or not; and then that same night at midnight (again, in the eyes of the law) you suddenly gain that maturity. It's a fairly arbitrary number and reckoning method. Now that's just an analogy so I don't want to get carried off talking about that, but it is similar in some ways with immigration. I think few people on here (from what I recall reading) would argue that "open borders" are a good idea. So where do we draw the line and what academic and humane means do we use to draw this line, and when we DO draw the line how far are we willing to go to enforce that line we've put on the books?
To me, it's a difficult question that I don't feel comfortable answering with certainty. Of course I can look at an individual woman escaping domestic violence with a brain tumor and the human(e) side in all of us says, "Oh, just let her stay here!" but where does it stop and how can we devise a system to look at individual cases for the thousands upon thousands of people with unique and varying situations?