I have detailed notes from a panel discussion that answer some (but not all) of the questions. DM or email me (at Georgetown) and I'll get you a link to the notes.
I am so sorry. That sucks. It's extra maddening because there are simple solutions so even if we can't fix people being weird, policy and architecture sure can go a long way.
I can understand the sentiment but I don't think so. DHS stats folks produce (or used to) a ton of info on migration that is important to understanding population change--data critical for funding allocation, disaster prep, transportation planning, public health, etc
Understanding not enforcement
Whispers: Maybe it's not "the economy" (jobs) that they're worried about.
Maybe sticker shock at the grocery store matters, even if you have a well-paid job.
Maybe it's a growing sense of dread over fiscal impacts of extreme weather.
Maybe it's oligopoly.
Maybe it's rising inequality/Gini index
I think that's the fundamental L/R difference.
One side thinks all humans are autonomous and should be treated with dignity. (Not impunity. Dignity.)
The other believes in a hierarchy where some humans have a "right" to control others.
Eww.
I distinctly recall the 1st time I saw orange sky in RI and it totally threw me. For better or worse I'm used to it in California. Surreal to see it in New England.