Immigrants make the best citizens. They actively want or need to be there, so they’re more likely to participate in the less glamorous parts of being a citizen. They build resilient communities, expose their new neighbors to different cultures and experiences, open great restaurants, and are less likely to commit crimes than existing citizens.

We are all better off when there’s a large and diverse immigrant population. It enriches everyone, both culturally AND financially.

We need more immigrants, not fewer.

There are two sides. They also can introduce problems to their new countries that largely solely exist in their home countries. For example, the UK has one of the highest rate of acid attacks, but this is fairly recent problem in the UK. There were all the sexual assaults in Europe in recent years. In North America there is caste discrimination in cities like San Francisco and Toronto. There are separatist/sectarian violence in developed countries which would not otherwise have it. An example from hongkong is sometimes triads will go to other countries and operate there.