The Fundamental Problem For Immigration Activists

 The types of immigration that are most beneficial for the host country are the ones that are most harmful to the sending country.

To put it simply: high-skilled immigration causes brain-drain in sending countries, while low-skilled immigration causes various other problems in host countries.

Whichever type of immigration you allow, you end up hurting disadvantaged people: in the case of low-skilled immigration, it's the native working class; in the case of high-skilled immigration, it's the working class who're left behind in the country of origin.

Left-wing activists who support higher immigration face a fundamental problem.

One option for such activists would be to call for a representative cross-section of sending countries' populations to immigrate - comprising people of high, low and intermediate skill-levels.

While this would go some way to addressing the arguments I've outlined here, certain problems associated with low-skilled immigration couldn't be compensated by the additional tax revenue and job opportunities that might be generated by high-skilled immigration.

The only type of immigration that's relatively benign from pretty much everyone's point of view is immigration between advanced Western countries.

https://www.aporiamagazine.com/p/the-fundamental-problem-for-immigration