The border is already secure. You can't leave if they don't want you too. A border secure enough to keep them out is also secure enough to keep you in.
My country is the world. I have a World Passport. So what country are you going to try deporting me too??? Getting the World Passport solves this wall problem. We have inalienable rights NOT civil rights. Just because I live in the USSA or as I call it "Corporate Fascist America," doesn't mean I'm a citizen of any state. No blood on my hands. I refuse to participate in this lawless tyrannical corporation that has invaded my country known as the United States. For I am stateless. I am Sovereign. Free men don't have no government issued form of identification. Do no harm but stand your ground.
Even though I support building the wall, I think you have produced a decent argument. Thank you for your point-of-view and the effort you have made in this response.