> Immigration is a serious and key issue, which impacts everything else, too.
No, other things are serious and key issues, and immigration is the scapegoat that gives people someone to blame for their problems, distracting from actual solutions that don't fit in a one-sentence slogan the way the non-solution "kick out all the Xes" does. This has been an electoral tactic of right-wing populists for a long, long time.