Kill ‘em. Each and every one. Every time you find one. Hoe. Shot gun. .22 snake shot. Whatever it takes.
I killed a rather smallish (18 in.) in my yard with a nine-iron. Nasty critters, they are.
When it comes to the non-venomous variety of snakes, I just leave them alone to do their thing. Venomous snakes? I kill them on sight. No point in putting my wife, grandkids or dogs in danger. And yes, I can tell the difference between the two. I was raised in a time when men were men and women were women and there was no confusion at all about things.
No, wrangle as many as possible and then resettle them at the prominent illegal crossing sites along the border. Win for the snakes, win for the U.S.