The politics around allowing immigration are complex and controversial though. Som e people will fight tooth and nail to prevent more of the "others" from coming into their country. I'm not just referring to the US and Europe.

Look at Japan for example. Immigration has been touted by Western think tanks and pundits as a solution to their demographic problems, but instead they've chosen to go all in on automation and robots to attempt to solve it.

I expect Korea to follow the same path. Probably China too. A lot of East Asian countries that are at the bleeding edge of the demographic bomb place extremely high value on population and cultural homogeneity. The West would probably label that as racism.