I don’t think it was the problem back then that it is now.
At least, I don’t think it was on as many people’s radar back in 2012 as it is now. Freepers are always ahead of those curves.
It has been an issue since W.’s multiple attempts at amnesty and refusal to enforce the laws.
Unfortunately the GOP was determined to squelch it as an issue and nominate amnesty candidates which made it a non-issue.
One cannot vote against amnesty/open borders by voting for amnesty/open borders candidates.