The trouble is they continue to slither daily over our borders, and we can't possibly keep up with it. I suggest we put all military in that area on the border. If we can watch Afgan, Syria, Iran, Pakistan, etc borders all over this planet, we can darn well care for our own. Anything less is unacceptable.
Let me know if anyone provides a reasoned and intelligent response to your post...
I suggest we try not to do anything prohibited by the United States Constitution, which that is.