I wrote a piece at the Daily Caller about one guy I met back in 2007 who was opposed to immigration reform and how he relates to so many of the groups involved in stopping immigration. The short form is that instinctive opponents to immigration fail to understand either Christianity or conservatism.
To the extent that my acquaintance was concerned about human dignity, he viewed an increase in the population of humans as the greatest challenge to that dignity. This is something that he shared with Margaret Sanger and the founders of Planned Parenthood. That’s why Planned Parenthood supported contraception and abortion for certain elements of society. This is the real face of so many leaders of anti-immigration organizations who, when they talk to conservatives and Christians, present themselves as conservative.