Joe Setyon: "Two Big Reasons We Don't Need A Border Wall"

Neither of these seems very strong to me, but they do require more thought. Just because x is a bigger part of a problem than y doesn't mean that y shouldn't be solved if possible. And, though I agree that we may need more legal immigrants in the short run to fund boomer retirement, I don't think that should affect the debate about illegals.
   But once you get past the very dumbest and most hysterical anti-fence arguments on the left, the disagreement quickly does--or should--become more of a question of costs and benefits. So actual expertise is required. I just want to slap down the dumbest arguments and get us to move to the phase where we discuss the matter like adults.