I believe The Wall is developing in to Trump's SDI, his "no new taxes." This cornerstone of his campaign promise on illegal immigration seems to be his Last Stand. Similar to nuclear arms reductions (which Reagan's own people decried) and SDI (which made Reagan a laughingstock with those in and outside of his circle), I get that Trump will have to break some eggs to make an omelette.
Pushed between a Wall and deportations, I'll take the Wall.
What’s the point of a wall if we surrender the rule of law and the country?