Mexico says about the caravan: "The most vulnerable will get humanitarian visas."
What's that, a 2 week or 1 month visa to be within Mexico, just enough time for them to come to the northern border and try to slip through? That's what Mexico used to do, give the "unaccompanied children" temporary paperwork like that. I've never heard of Mexico actually taking in and supporting vulnerable foreigners, so I suspect it's a plan to send the problem to us. We may have to clarify that these people are now Mexico's, not ours, because Mexico let them in at their southern border.