You're no better than the original murderer then.That's the problem isn't it. Make them legal.None of those things except deportation are legal.Stopping illegals is easier than it looks. It just takes iron resolve.
When an illegal is caught, brand them on the face then send them back. If they return, they can be shot on sight with a bounty. Children of course should be sedated before branding. It won't take long before they get the message.