No one is saying it is currently happening, you goof. Remigration is an idea proposed by identitarian assholes like https://en.wikipedia.org/wiki/Martin_Sellner, author of a book called Remigration, who Musk has promoted in tweets.

It is not currently happening, but the richest man in the world is among those actively working to make it happen.

Again, you types confidently misunderstand a discussion.