It depends on where you are.

e.g. in NZ, we don't have a problem with illegal immigration, but completely legal "temporary migrant workers".

The issue, isn't the people, it's the load on already stretched infrastructure. Because they are "temporary", they are not factored into the calculations for infrastructure spending.

This wouldn't be a problem, if a short team need was being met, but it isn't... There are always temporary workers, because we as a country can't fill all the jobs from local supply.

With birth rates and other immigration, our population growth is around 1.5%, not the 0.5% we target our spending at.

If we spent at a rate that accounted for the real population growth, everything would work better for everyone.

I’d argue no, if you have valid reasons and lets not kid ourselves even though there is enough wealth in the world to have everyone live comfortably, thats not the game the wealthy and their puppet politicians play. They want us cheap and desperate and immigrants are just another tool to achieve this objective.