

As someone living in Asia, the US losing influence is a really scary thing. China has been increasing their aggression in the region and the US’s presence has always been the counter to that. It was a good balance but a weaker US will tip the balance to China’s favour. Not to mention that the US has been a key factor in getting Korea and Japan to work together on security matters. Unfortunately, there’s no EU or NATO equivalent for us to rely on.
They actually have quite a bunch of programmes to bring foreigners in. That’s not to say that the cultural issues aren’t there but that’s a separate problem regarding integration rather than immigration.