These groups are intent on creating a new form of slavery, people who work under extreme conditions for little pay with no legal protection from abuse. This has been a far-right aim for decades with the disbanding of the Braceros program after the SCOTUS ruled those participants could join the farm workers union
As far as I can tell, the "left" hasn't changed their opinions at all in the past 60 years, while the republicans are rewriting their narrative on a daily basis
The amount of times a left-wing person has said "who will pick your fruit" or "who will clean your toilets" or "do you want higher prices" when talking about immigration, when Bernie Sanders has literally in the past said the places hiring illegals should be shamed for creating a slave class, kind of disproves your point.
Not to mention the left fear mongering about all immigrants when people are clearly talking about illegal immigrants... especially when you can find plenty of videos of Biden trying to appeal to legal Latino voters by saying that illegal immigrants should be limited. Not to mention the Obama "deporter-in-chief" moniker.