No. That's not how it works. That's propaganda like the FEMA Camps stuff. Russia, China, and Iran puts that out to get you all worked up and people fall for it.
All people have to do is Google UN Peace Keepers and the US. There are many articles and professional papers on how it works. The MAM coming across the border are not Peace Keepers. They are coming for much different reasons. Reasons that could lead to UN Peace Keepers having to get involved eventually. Have enough emergencies then FEMA might have to build camps. You can read about that on official FEMA SOP's.
When people who understand how this works tell you that it's possible to get UN Troops here enforcing laws. We are not talking about conspiracy theories. Just go read their own information of how they operate and articles on prior missions. We should never want countries that are in the UN here. Just look up who is in the UN.
We value diversity and recruit from a wide range of backgrounds. Our personnel come from countries across the globe to support conflict-affected communities in our peacekeeping missions, regional hubs, and at HQ. Read more about careers in the UN and about working in a field mission. Civilian...
peacekeeping.un.org