I read that you're Cuban in your profile. Knowing what you know, you have much more insight than the average American. You know either through story or life what would/could happen if these borders aren't controlled. It's good to know were on the same side, as I think our pro-law stances are the most tolerant and respectable views. It's not the skin that makes us American, it's the reason/respect of our good side.
Well, I was born here. I consider myself more of an American than Cuban. I just see this as a country's right to control their own borders. I don't see anything wrong with that. I had a huge argument with my Costa Rican boss over this a few months ago. He called the fence the next Berlin wall. I told him that was impossible since the fence is not meant to keep people in, but it is meant to keep people out.
I think Krauthammer said it best:
When you build a wall to keep people in, that's a prison. When you build a wall to keep people out, that's an expression of sovereignty.