I think most people (especially me) look at the wall being the stupid boondoggle of the whole thing, and terrible for the environment, and terrible for the literally thousands of land owners along the border that will get sliced up due to the "wall". Immigrants aren't like some Mongolian hoard that a wall can stop. Enforcement in general is fine. Using patrols, drones, and being more vigilant on overstays is a better choice. Deportation and seeking out too much of that side of enforcement is expensive and can be downright cruel if left along for a long time. But there needs to be a way to get these people a path to citizenship, or at least get them to being permanent residents if people are so scared about them getting voting rights, at least it gets them paying taxes and businesses to toe the line on it.
Having gone through all the legal path with my gf on getting green cards, the system is slow, costly, and racked with landmines if you don't have a lawyer, it's kinda no brainer why there are so many "illegals" it's goddamn hard to do it legitly.