I don't see how it's as simple as "addressing immigration". Maybe in europe this is the case, I can't say. But you brought up Trump, and in the US, that just doesn't make sense.
Immigration just isn't that big of a problem here. There was a report showing that immigration between to the US from Mexico was a net NEGATIVE for the past decade! (
http://www.pewhispanic.org/2015/11/19/more-mexicans-leaving-than-coming-to-the-u-s/)
My point in saying this is NOT to start a partisan political debate or rant. I'm saying that there have to be other issues because stats don't back that up. Blaming immigration in the US is scapegoating.
I think the real issue is sadly found in the GDP numbers. People's standards of living have stagnated or are falling due to a weak economy. There doesn't seem to be one particular problem or easy solution, either.
Overall, I sadly and distastefully agree with the OP. We've entered a scarier new world in the west.
