Its not a matter of memory. Their voters don't even know the immigration policies of the last quarter century. It makes trying to talk to this voting segment so hard, because they're making their minds up based off half the known facts.

But they don't know, they don't know, and its so exhausting having to establish the same set of facts before you can even have a worthwhile discussion on something like immigration policy.

Then theres those disingenuous people, (or they're that propagandised? I don't know), that don't recall the facts each time the subject comes up subsequently, and have reverted to their original set of statements. They're exhausting people with less fruitful or interesting discourse to be had.