I resent getting pinged for this thread, but since the journalists have already molested the data and told their readers that it's ok to start predicting which generation is going to send us into Mad Max mode: Yyyyes they can. State and Federal agencies can 100% keep as many people as they want out of any town they want. We just don't like to imagine the United States govt taking that kind of action against its own citizens. But if you're talking apocalyptic migration scenarios, it wouldn't even require anything near apocalyptic weapons systems. I hate that I wrote this.The migrant caravans will move north, ignoring borders and laws. Because when millions of people come walking into your town, the police are going to be entirely powerless against them. (CUT TO: scene of Walking Dead zombies shambling towards the camera)