“In one fell swoop, we stand to undo all of that with a border wall," he said. Big Bend, a 1,125-square-mile park in Southwest Texas, abuts 118 miles of the Rio Grande – the sharp southwest U ...

There are four endangered species found in Organ Pipe Cactus National Monument, a 515-square-mile federal natural reserve in southwest Arizona, which is marked by 200-year-old majestic saguaro cacti.