to be the case. >> dan: joining us now with the reaction, formal obama economic advisor austan goolsbee. national security analyst morgan ortagus, and florida congressman matt gaetz. okay, austan, i'll go to you first. you know i appreciate a good back and forth with you, you ar- always a gentleman. >> we have a fun time. >> dan: we do. i tell the producers, oh, great, austan is here tonight, it will make for a grade back and forth. austan, simple question. do border walls work as a deterrent a or not? >> no -- i mean, you got 60% of the people that come into the country illegally who fly here, they come to an airport. i don't thinkll that the wall works, no. >> dan: of course, a plane is going to fly over a border wall. i think that is obvious. but these are overseas or a different issue. i'm talking clearly about illegal border crossings on the southern border. just quickly, if you believe is a deterrent or not.