Developed countries around the world should be tripping over themselves to offer asylum, motivated not only by humanitarian concerns but by considering asylum as an investment in the brainpower of a nation.
Indeed, what would really make sense is for developed countries to be actively working to apply IQ tests to every third-world shanty town out there, and actively paying high-scoring individuals to immigrate.
In the real world this kind of thing is generally considered somehow to be in bad taste, so most developed countries go about it in a rather more roundabout way. Still, any country which actively started recruiting would find themselves with a huge advantage (at least when it comes to Fields Medals).
Say a small city has about 50 new job opening per year at there current growth rate and already has about 100 people looking for work. Do you believe, because your intentions and character are good and you mean well that somehow a magic fairy is going to come down and create more jobs just because more people show up? Do believe in type of job theory where if the wealthy are allowed to keep wages low, because of competition, that we all will be better off in the long run because of some "trickle down theory of labor"?