Did you not see the official National Border Patrol Council come out in favour of the wall just a few days ago?
In return can I ask you for proof that most illegal immigrants are trafficked through air, sea and via Canada?
If a wall wouldn't work why did the Democrats vote through 700 miles of border in 2006, and why did the Obama administration want to add additional barriers in 2009 on the remaining 1300 miles at $7bn? Why does the Israel/Egyptian wall work so well, why has anyone in the history of mankind ever bothered to build a wall? It obviously wouldn't stop all illegal movement but don't deny that it would push expenses and difficulty levels for illegal operators towards levels that are unsustainable. Or that $5bn isn't a ludicrous sum in the overall context of the USA's financial power.
Let's face it, this isn't a wall thing. This is another liberal I don't like Trump thing.