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What would Trump's expanded border wall mean for the Southwest?




A U.S. flag put up by activists who oppose illegal immigration flies near the US-Mexico border fence in an area where they search for border crossers October 8, 2006 near Campo, California.
A U.S. flag put up by activists who oppose illegal immigration flies near the US-Mexico border fence in an area where they search for border crossers October 8, 2006 near Campo, California.
David McNew/Getty Images

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Republican presidential candidate Donald Trump is calling for an expanded wall along the US-Mexico border as part of his immigration plan, released this week on his campaign's website.

It's not a new idea – and a perennial talking point every election season – but it seems to be gaining traction. According to the most recent CNN poll, one-quarter of registered Republicans now support Trump for president.

"Communities along the border have been through this before," said Melissa Del Bosque, reporter with the Texas Observer who writes the La Línea blog. "Most of the land on the border in Texas is privately-owned so a lot of land owners have been sued by the government and have had their land seized."