Well, I was responding to completely "sealing off the border" and, presumably, deporting 20 million illegal aliens - $6 billion for the actual wall will be chump change compared to a global recession - all of those are therefore possible scenarios.
No one is seriously talking about a roundup of illegals. What has been overwhelmingly discussed here are measures to make the current illegals self-deport.
No, you were responding to the proposal of a 95% effective barrier. That barrier will not cause the economy to tank.
That's the problem here. You're incapable of making your point without putting words into people's mouths. Speaks volumes about the solidity of your own position.