So do I have this right?
Mexico talks big about stopping them at their Southern border.
They break down and overwhelm the border barriers.
Mexico folds like a cheap suit and tells them, "Okay, we give up. Come in, but just keep walking to the US border".
When they reach the US border, Mexico will start yelling about how terrible the US is for not giving them sanctuary.
Did Mexico even try stuff like pepper spray, bean bags, and water cannons? The video clips I saw just shows Mexican authorities kinda standing there waiting as these people violently attack various border barriers. I mean, these people are packed together like sardines. It's not like they're spread out over miles of the border. I'm no expert, but if you have a Thermopylae situation going on and you're on the Spartan side of it, it shouldn't be that hard to deploy non-lethal deterrents and keep them going for days if need be until these knuckleheads tire out.