There’s a false premise underlying the question: immigration reform wasn’t the big issue with hispanics this year.
ObamaCare, and “free” health care was. For nearly 65% of hispanics, that was the primary issue they voted on.
Supporting immigration reform gets the GOP nothing. They won’t benefit from it (because hispanics aren’t going to vote based on it), and it will hurt them by driving away their base while simultaneously expanding the Dem base (from the influx of hispanic immigrants who will either become citizens or who will have children who are citizens.
This is why the Dems and the MSM are pushing this issue so much as one the GOP has to compromise on.
The GOP can’t outspend/out promise “barack-o-claus”