You will have to physically wrestle down every one of those healthy, strong, young men to corral them. While you are busy wrestling down some, the rest will barrow through. What happens if our troops are killed by knives? What happens if our troops are blinded by spikes in clubs? Will the drug cartels give them guns? I say post signs on the border that read, “Anyone illegally crossing the U.S. border will be shot.” Have speakers blaring out the warning. Have planes dropping leaflets. If anyone gets shot, they will have been forewarned.
If you embed BP and ICCE agents into the military it is easily done. This is not rocket science. I have no problem with resisters being shot. But you just don’t shoot unarmed peaceful people that are taking orders.