"Back in the good old days when 'merica didn't have any immigration laws and my ancestors waltzed on in" is a hilariously naive and ignorant libtard talking point.
Even more so than the, "if drugs were legal, the cartels would disappear for lack of anything to do".
The point is fix the actual problems, not build a wall to give you goobers a false sense of security....Which does nothing but cost money.
Correct me if I'm wrong, but the problem the wall intends to fix is the illegal entry of people from across the border. Seems to be a spot on approach.
Fixing the immigration process may very well deter a small few people from crossing illegally in hope of legit entry, but I'm pretty sure our immigration policy isn't to let in as many hopelessly poor people as possible (eg, nearly all the illegal border traffic--wall gets most of these people). We have a surplus in that department already, and it's a very expensive problem we already can't afford.
Illegal drugs are a whole another issue with many layers, one of which the wall addresses(human transport of narcotics).
There are literally mass graves on the border, and the narcos engage in slavery and human trafficking. To this day, I cant believe we've been largely ignoring this problem.