As far as I see it, its not "us and the Democrats" versus Republicans. Both parties delivered equally well on their promise of immigration reform; that is they've delivered nothing so far.
It's clear that Republicans are playing the dirties possible game right now, stalling any and all progress, because any further legislative success is going to go straight to the balls of the Republican party in November.
On the other hand, the 1986 immigration reform bill (ie. the original "amnesty") was signed by Pres. Reagan, the sweetheart of conservatives everywhere. And we had an actual vote for CIR and the DREAM Act in 2006 under Republican control.
It's all moot. I'm really getting at this:
Trusting either party to do the right thing is a grave mistake. Doing so is not how democracy works (angeleno, you're making calls, you know). We have to keep up the pressure, keep organizing, and hope for the best.
Cool it and stay focused on the numbers.