Its not about immigration at all. It is about creating a "us vs them" tribal narrative. That's why people defend even US citizens being harassed under this administration. And the justification is because they might hold a different PoV.
The irony is that if anyone thinks they are going to solve this problem - I have a bridge to sell. If GoP solves this then they are going to lose of the biggest talking points in next elections. I can see this being challenged and drama played out for long time saying "other side" is not letting them move forward with it.
All the while the "extraordinary" Green Card will actually be "ordinary" - done by greasing POTUS palms. Because POTUS and his supporters are hell bent on turning America into a third world low trust country.