In 2002 (aaargh!) Peter Brimelow wrote
If you support an “enforcement first/amnesty second” approach, as I do, you would understandably be feeling a bit beleaguered right now. It’s not just that the Obama administration is against you, cooking up statistics showing “record deportations. ” The press is against you. The elder statesmen are against you. The juiceboxers are against you. Even Fox News is against you. Practically all the Democrats are against you and the Hispanicked Republican elite is against you too. Marco Rubio has sold out your cause and (not coincidentally) gets on the cover of Time. Big donors are pressuring think tanks not to promote opposition to immediate legalization...
...immigration reform–i.e. amnesty–is by far the most important issue facing Congress this year… the decision to legalize 11 million illegal immigrants, plus whatever equal number of relatives they bring in–and the potential to attract yet another fresh wave of illegals–would cause huge changes to the nation and the labor market. These changes, unlike tax increases, will be irrevocable.
However while dimmer Republican operatives may be Hispanicked, I believe it is just camouflage for the leadership cadre. Consider what the disgusting Paul Ryan  said on Sunday when complaining about the White House Amnesty Bill leak:
...the question that we always have to ask ourselves, particularly with this White House, is the president looking for a partisan advantage or is he looking for a bipartisan law? And by putting these details out without a guest worker program, without addressing future flow, by giving advantage to those who cut in front of line for immigrants who came here legally, not dealing with border security adequately, that tells us that he's looking for a partisan advantage and not a bipartisan solution.
(VDARE.com emphasis) 'This Week' Transcript: Rep. Paul Ryan and White House Chief of Staff Denis McDonough  ABC News Feb 17, 2013
Marco Rubio also (funnily enough) used the same phrase in his indignant squeal  on Saturday evening:
The president’s bill repeats the failures of past legislation…and does nothing to address guest workers or future flow
This has not much to do with appeasing Hispanics. Hispanics do not particularly want hordes more coming in behind them.
Follow the money!