Trump's border wall would pose especially big concerns at Organ Pipe Cactus NMon, advocates say

Driving up to a trailhead just a few miles from the US-Mexico border in Arizona’s Organ Pipe Cactus National Monument, biologist Rosemary Schiano’s first advice is to cover our spare water gallons.

“People will break into your car if they see water, especially in this heat,” she says.

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