Let’s just take the wall. The US-Mexico border is about 2,000 miles long. How much per mile would an 8 ft tall wall cost? A million bucks? That’s probably way too low.But let’s start there. So it costs at least 2 billion dollars.But illegal aliens can buy step ladders. They can also tunnel. So the wall wouldn’t work without guard stations and electronics. How much would that cost? It just doesn’t make sense. China tried to keep dangerous immigrants out with a wall. It took years to build and didn’t work. Their illegal aliens conquered China repeatedly.
The wall will work if it is manned and militarized. I am sure that legal action against the employers of illegal aliens is part of the plan to dry up the demand. Walls do work - just ask the East Germans.