Nah, I don't buy that. Everything up to this point is EXACTLY what the Democrats wanted. And what we have had up to this point is a de-facto open border. We can "Yeah but" around the edges but basically their policy has been if you aren't a crook and can walk across that border, you get some legal proceeding that we may or may not force you to attend and then you get to stay.
Their compromise was to look at the amount of people currently coming in and say, "Well, we will cap it at that amount."
The consensus should be really ****ing easy since everyone totally doesn't want illegal immigration. You don't go through the proper channels to get here, you don't get to stay. The end. FWIW though, the GOP doesn't want a deal either because their donors love the cheap labor. Potential future votes and electoral power for one side and people they can pay shit wages that are supplemented by government benefits on the other (because illegal immigrants are among THE most likely to be on some form of assistance), but they don't pay that anyway, we do.
And that ladies and gentlemen is why Trump. The American public isn't always the brightest, but they eventually figure things out.