they ve created called arizona border trash dedicated to cleaning up the thousands of tons of garbage strewn across by illegal immigrants. the government accountability office put it this way. illegal border activity on federal lands not only threatens people but endangered species and the land itself. illegal aliens and smugglers have destroyed cactus and other sensitive as vegetation that can take decades to recover. one land management official described in other property on arizona s border as so unsafe with resources so destroyed that it is primarily used for illegal activity and no longer visited by the general public. it s not a press release from donald trump s campaign team, it s a federal study from 2002 which was back when people could do science without getting fired for it.