Well, one can reverse immigration, but the actions necessary to do this are not pretty, especially not after one or more decades/generations.https://twitter.com/RoundSqrCupola/status/940727050910011392 …
No specific proposals, but use google and you will find some. More importantly: if they had made the situation public, millions of brains would have worked on the problem and _maybe_ suggested useful solutions. This is an obvious case where crowdsourcing ideas might work.
