How does the border wall solve the alleged illegal immigration problem when they could just hop on a flight and ‘miss’ their return flight home?

Question

EDIT: Learned that many countries are required to have a Visa before entering. They cannot travel to the US, even for tourism, without it. As a privileged American citizen, I naively thought anyone can travel anywhere for tourism purposes with just a passport.

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Answer 1

That’s a really expensive and time consuming way to do it. They could just climb over it, or under it, or probably cut through it. They are the ones who were going to build it for us anyway so they’d definitely know how to get through it.