Explain
i mean that a lot of liberals like to lol
@ trump's wall building, presumably because it makes them feel good to think he's not accomplishing anything and also because they don't know any better. but in sw az they are building miles and miles of wall where before we had vehicle barriers that were permeable to wildlife. among more subtle impacts, it cuts thousands of square miles of relatively pristine desert (natl parks/wildlife reserves on both sides of the border) in two and if the wall remains up for long, and barring interventions, it will very likely cause the local extinction of the large mammal populations in the area dependent on moving back and forth across the border.
afaik, they still haven't started in s texas, but when they do it will have the same impact. the first walls going up are on federal land which is mostly parks and refuges because they can build there without fighting landowners, etc.