Who said anything about letting them in? They simply can't get in as a group - the Border Patrol has plans in place for reacting to riots or mass demonstrations, and they'll use that training to stop them from coming over as a group. No need to go running around like Chicken Little crying about the sky falling. What's much more likely - if they really want to succeed - is to split up once they get close to the border and make their ways to whatever tunnels may or may not be available, or onto other forms of transportation.
Thing is, this will be hard for them to do since the press has already seen them and reported them - you know, that "fake news" press that y'all claim can't be trusted in anything they say? Oh, wait - I forgot - if they say something y'all wanted to hear, well, ha-rumph, then it must be true!
But the last thing we should do is spread panic and alarm...which is what the Right is already doing. Or haven't you noticed the word "invasion" being bandied about? Though for some reason I just can't force myself to call a group of 1,200 migrants an "invasion".
One last thing - my post wasn't "hyperbole". It was satire. And besides, the references to "buy more guns" and "build the wall" aren't really hyperbole at all - if I were a betting man, I'd wager quite a bit that it would be child's play to find a few right-wing sites pushing either or both using this "invasion" as their latest excuse.