Back in the days when I worked for a living, I participated in a lot of teambuilding exercises. I guess management thought I wasn't a much of a "team player."
In one workshop, the facilitators tasked us with climbing a 30-foot wall. The wall face was smooth, completely free of convenient knobs for helping us scale the wall. They gave us no ropes, ladders, or grappling hooks. Our instructions: everyone had to reach the top and the team could not leave anyone behind.
A daunting challenge? Phht. It turned out to be quick and ridiculously easy. The larger team members simply formed a human ladder. The rest of us clambered over them to the top. Even I shimmied up in about a minute. Once at the top, we pulled the "ladder" people up behind us. It took about 15 minutes to get the entire team to the top.
In a Trump Wall scenario, the task would be even simpler with rope ladders. Ironic that Trump's (Stupid) Wall might be easier to breach because Border Patrol personnel can't see through concrete! As long as they move quickly and quietly, people coming over the wall can reduce the risk of being detected or captured.
Anyway, if I could climb a 30-foot wall -- an overweight, middle-aged (at the time), arthritic desk jockey, then Trump's Wall would be no real impediment to desperate immigrants. No more than a speed bump.
Endnote: I wanted to use a photo of a long 30-foot high concrete wall. After a while, I gave up looking for one. Concrete has been around for thousands of years, yet apparently it isn't a common choice for mega walls. Go figure.