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

The wall literally solves nothing. They have already found holes in the wall made with a simple angle grinder. You can buy one in home depot and 2 batteries for like 60 bucks. And most immigrants that stay here undocumented just have thier visas run out and they don’t leave. There are so many ways to get into America legally and just not leave. There are also soany ways to get here illegally. But that wall is a gigantic ego project by trump. If the wall worked it would have been built already.