1. Yes. It is. It's not brown people from another country making decisions shaping American employment markets or legislation. That's squarely local business owners who could act in compliance with the law, but since they're (often white and) wealthy we shrug and mumble about invisible hands. Folks would rather lash out at vulnerable aliens near them than the lawmakers and business owners who continue to exploit them. Mostly because the alternative is punishment from those who hold power and a mighty sum of congnitive dissonance. ("Wait, if I voted for you then you did this to me... and then I voted for you again...")

What's more, the intersection between the jobs that illegal immigration fills and what locals can legally work is low and has been shown to be low over and over.

2. Trump awknowledged and embraced fears the American religious extremists have been trying to seed w.r.t Muslims, a process conservatives are complicit in since it's such an easy fear to appeal to. Beyond that... He panned a health care law the Republicans have been sabotaging to tank it so they can say it would surely tank. And... What else?

Again, look at the data. A majority of Trump supporters don't vote around nationalist economics. Separate data had people pro-ACA (where it wasn't sabotaged, for example in Pence's watch) but anti-"Obamacare." You tell me what that suggests.