If you were to poll people about immigrants with more precise questions, it might help to define the issues better. IMO most people don’t have a problem with immigration when the person come in legally and tries to make a life for themselves and/or their family. When these kinds of people try to actively get employment, And join the society they come into, people respect and would endurance it. It’s when people come in illegally, working for a non-living wage and hiding income as much as possible, or get into whatever dole/welfare system is in place for free support, perpetually, that people generally are offended by. This does not mean that welfare programs are a bad idea, just abused, even by full citizens. Go back far enough in all ancestries, and we are all from immigrant pasts.