Maybe, consider it a difference of how I view representation. These people are here whether you like it or not, and they are vital cogs in the economy, whether you like it or not. Representatives should represent the people in their district, undocumented or not.
I am not trying to start a fight on this, but I'm legit curious: Is there evidence to suggest that having non-citizens as neighbors makes you more likely to vote in a way that represents the interests of non-citizens? Has this been studied? Because even if you are apportioning seats based on total population, it's only the actual citizens of voting age in those districts who are doing the voting.
What if, hypothetically, the evidence actually went the other way?: That living near non-citizens made people more racist, and therefore more likely to vote in representatives who advocated policies that non-citizens didn't like? Would that change the calculus?
I don't know about policies per se but there seems to be some evidence that high number of immigrants force natives to vote more conservative/Republican. This seems to be the case in almost every country.
It doesn't quite answer your question but I would find it hard to believe that natives would not become more racist and less tolerant.
