I'm not sure how you define the left, but if you mean Democrats I think I understand your point. IMHO, the societal issue to overcome dealing with immigration vs poverty is overcoming fear of the other and there is no one-size-fits-all solution I can see. Even Evangelists have abandoned their savior’s words on this, only to embrace attempts at drowning their own fears with perceived power and money. Fears triggered by current events that remind us of past troubles are hard to spot and even more difficult to overcome once understood. And they are unique to each individual to a large degree, even though I assume there can be groupings. Dealing with anxiety is still a personal battle. Even the seemingly most simple person operates within a complex web of conscious and unconscious thought, whether aware of much of it or not. Unscrupulous actors prey on the unwary and the fearful in order to command mass movements. Poverty is a tool for them. Even if a largely white population was made to happen in the US, all the ills we see now would still be here in full force. I suspect I am preaching to the choir with this view, no?