[Yulee]

“Walls are made to keep animals in or out, walls cannot contain people,”

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It can exclude those who want to invade or illegally cross into a country. His tribe is welcome to relocate across the Mexican border if he feels confined. I would imagine that all members of his tribe would rather live within the US than Mexico, and probably hold US citizenship.

[fuzzylogic]

Tell the Chinese their wall never worked. A wall that is monitored works wonderfully.

...besides, this reminds me of Palestinians - they really don’t care about some land until somebody does something with it they want to object to for political reasons.