The demographics you describe in 1 and 2 are de facto an incredibly small minority compared to other, more typical forms of immigration. Just think about what percentage of the population is wealthy enough to emigrate, let alone engage in borderline sex trafficking.

As for #3, yes, we have a party who is currently succeeding in pitching populism and proto-fascism dressed up in culture war nonsense. The job of progressives is to address those same economic concerns in a manner that actually works rather than the trickle down myth from the right that has so thoroughly gutted the middle class.