I see the wall as an investment. Building it fast is a bigger priority than the costs associated with it. Even if it cost 50 billion, I am quite sure it will pay for itself in many ways just in a matter of years. Between their parasitic welfare scams, drain on schools and public services, voter fraud, and their thousands of felonies.
Tell you a true story. Spent 11 years chasing illegals in S Texas with different groups. One of my buds and I were on a 20+ thousand acre ranch that we had not be on in almost 4 months when we ran across these signs on fence posts pointing with wording in 4 different languages, saying Follow arrows for help. So we cruised on over there on our 4wheelers. Low and behold there was this behemoth of a beacon device out of 6' square tubing with blue beacon and transponder on top, battery powered solar panels, the whole nine yards. On the control panel in the four languages was a mushroom push button. PUSH FOR HELP. Well we were pissed. We drove around this thing then headed off to some tall dunes to setup shop.
About 45 minutes here come BP in vehicle and we recognized the two boots, flag them down and start talking. Sure enough they were responding to the beacon. Damn thing had ground sensors. Come to find out from them that the material for these WAS supposed to build the fence back when the first bill passed and the fence was supposed to be being built but instead they were building these sensors.
Now do you think all of that 3.5M/mi is building fences?