Mexico–United States barrier - Wikipedia
https://en.wikipedia.org/wiki/Mexico%E2%80%93United_States_barrier
The Mexico–United States barrier (Spanish: barrera México–Estados Unidos), also known as the border wall, is a series of vertical barriers along the Mexico–United States border intended to reduce illegal immigration to the United States from Mexico. The barrier is not a continuous structure but a series of obstructions variously classified as "fences" or "walls".
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