They tried to arm teachers. And they put cops in the hallways. I love the idea of this, but it's wildly tone deaf. In any case, "thoughts and prayers" is closer to what's needed - smaller class sizes and better mental health support - than whatever this guy thinks is the solution.
Like I said: I agree with what he's trying to say, but it's extremely poorly thought through and said.
It's meant to be sarcastic. Thoughts and prayers are worthless because God doesn't care if us humans exterminate each other. They're saying that since we aren't doing anything about school shootings, maybe we should also do nothing about the fake border crisis.