No one leaves home unless home is the mouth of a shark
This problem came to fruition in America in the broader scheme of media in the 18th century, when immigrants from Ireland and Germany came to America. These people and families came to America looking for new opportunities, and looking for a place where they could escape from the current life they were living. These immigrants thought of themselves as hard workers, and their extremely hard work is what allowed them to support themselves.
I think that fear and anxiety plays a huge role in the opposition that older generations of immigrants might have on immigration. Older generations witnessed first hand the hardships that their people went through in order to get to the position that they are in now. I think that these older generations understand the work that they put in, and that other generations will probably be willing to immigrate here and then put in that same work. One big part of the fear I think is financial and occupational security. Older generations of immigrants saw exactly what they were able to accomplish, and in doing so, potentially took jobs away from other people who had already lived here. Although this is fair, as whoever is working harder should be getting the job, the older generations may fear that their jobs will not be safe with many new hard working immigrants coming.
"conservatives, it turns out, react more strongly to physical threats than liberals do. In fact, their greater concern with physical safety seems to be determined early in life". This quote from John Bargh's article speaks to how Conservatives often react more violently and aggressively than liberals do. Relating this back to the topic of immigration, I think the reason that conservatives are more opposed to immigration, is because they see new waves of hard working immigrants coming into the country, and feel threatened by this. Instead of potentially just working harder, for some unknown reason, they believe that even though their families immigrated and did the same thing, other people should not have the same opportunities.