That’s ok,
let em all try to come in along the Big Bend area and die of heat and thirst
My wife and I have visited Big Bend National Park three or four times in the last ten years. It’s one of our favorite parks. There are several spots that overlook the Rio Grande where you see people on the other side. Some of them try to sell objects left in the parking lots of the outlooks on the U.S. side. It’s a huge area for the Border Patrol to cover, but I don’t know how long anyone would last in that desert on foot.