Interesting.

A study done last year shows that the people more opposed to immigration are people who are least exposed to immigrants.  Conversely, people who live in areas with lots of immigrants are more positively disposed to them:

The simplest interpretation of this result is that people who rarely see an immigrant can easily scapegoat them for everything wrong in the world. Personal experience doesn’t get in the way of fantasy. But people who actually see immigrants have trouble escaping the fact that immigrants do hard, dirty jobs that few Americans want – at a realistic wage, anyway.