illegal immigration is the opposite of the problem with the US. immigrants, especially illegal Mexican ones, fill in a big part of the lower bracket of the economy, i.e. jobs that educated people do not want.
those focusing on the need for a 'wall' are really out of touch with how the bottom of the US economy works. you cut off those desperate for low wage jobs and then who is randomly going to fill them? I'll tell you who- people who regularly could get better jobs will be forced to get worse ones because the economy will get damaged.
you break the legs of an economy and it can collapse. again, people saying "We need a wall!" have no idea how many illegals without paperwork are getting low income jobs under the books that help the economy. And the thing is an immigrant from Mexico might actually be happy making the wages they do (in some cases secretly below the minimum US wage), but a lot of born eductated American citizens wouldn't be happy with the same pay (or be able to survive).
a wall will only hurt the United States. Mexican illegal immigrants are not hurting the country because at this point the economy relies on them to fill out a low income job bracket (look at like practically every 7-11 or gas station you go into at who's working and figure it out in your head- a lot of those types of employees are being paid behind the books and in many cases aren't citizens).
I'm just emphasizing that a wall is stupid and will just hurt the structure of the economy, like a pyramid so to speak. if huge swarms of drug activity was flying into the country in the form of violence that would be different, but its not really happening. sure, some towns that border Mexico are quite violent, but beyond that nothing has drastically changed across the USA because of the influence of Mexican illegals. most of them are just looking for better jobs and lives, and even the lowest paying minimum wage jobs here are in some cases BETTER than what they can get in Mexico