I'm an immigrant myself. A refugee no less, I came here without a dime in my pocket and nowhere to stay. But you know what? I got here legally. I even am a naturalized citizen. I didn't sneak across the border and cheat my way in, I didn't beg for a handout. I went through the embassies, I paid my dues and filled out all the right paperwork. And not only didn't they rush me through the paperwork, they delayed me. It took me 3 extra years to get a correct green card. I had to keep renewing my visa during those years, and if I didn't, I would of been booted out.
Even though I went through all that, you know what? Fuck illegal immigrants. Why should they get a free pass to come here? What did they do to deserve that? Not just here, but anywhere, any other country. You shouldn't be able to just walk in without going through what everyone else had to do. Those other people didn't get that privilege, why do you deserve it? I came from a war zone, my apartment building was taken by Serbs and destroyed, I didn't have anything other than the clothes on my back. But I still didn't come here illegally. As bad as some parts of South America might be, I doubt its worse than the situation I came from.
Oh, and by the way, I do not believe you should round everyone up and export them. It shouldn't just turn into an all out hunt. But when you do find them, export them. You'd be surprised, but its fairly easy to live as an illegal, I know a lot of them. If you get caught doing that, you are a hell of an idiot. Its the governments job to enforce the law, and the peoples job to avoid them.