This kind should be locked up for ever, we should have prison camps with hard labor. By deporting them, they'll just come right back, raping a young girl isn't going to be a crime that would get them locked up in Mexico and why would they bother to stay there?
30% of our prison population are illegals. We shouldn't house these guys the rest of their lives for being scum. If we must, then throw them into the general population. But make sure they are tattooed.