I think they're underestimating the population estimates. Multiple caravans from the south will make us hit 404 million by 2030. Maybe sooner. Unless we have a wall built.
You beat me by 27 seconds!
At that point there will be such high concentrations of un-assimilating illegals being propagandized about how horrid the "evil white man" are treating them upon their arrival from 3rd W. S. H.s that they will be in open revolt.
Which will, of course, kick off retaliation from the much better equipped American Citizens and off everyone goes to a hot war here in the U.S.
Reality is what happens when proglibs are busy at "The Future They're Planning for Us."