The GOP must resist this. What they must have is a plan. I don't get the impression they do. Even Cruz, I'm betting, has no idea what to propose if the above happens. I surely don't know except that, something will have to be done that provides insurance coverage for those who lose the subsidies. If the GOP has no plan and simply stands by and hopes Obamacare craters, we will suffer for it in 2016.
We need a plan and, so far, I haven't seen one. The decision will come down in June, and the GOP can get the public on its side if the sales effort begins NOW.
There are several GOP plans for what to do about 0bamacare. The problem is that they haven't agreed on which approach to take. Any of the plans are a significant improvement over 0bamacare, but it's not clear that the GOP can get a majority to coalesce around one plan.
They can't even agree on the general approach to fixing it. There are three possibilities. The first is to repeal 0bamacare, go back to what we had before, and then start talking about fixing our medical care system. That sounds good to some, but the problem is that so many of the ins. plans people had no longer exist, the ins. cos. can't resurrect individual plans, esp. for people with pre-existing conditions.
The second idea is to replace 0bamacare with a GOP designed plan. There are several of those plans floating around, and none of them are popular with enough GOPers, let alone some dims, to give one a good chance of passing Congress, and for sure not popular enough to override a veto. The last option is to just start changing 0bamacare one thing at a time. Many of those change would be popular enough to pass Congress, even override a veto. It would be gradual, but some changes could happen very soon.
I personally wish that the GOP could find some way to get a majority for the second approach, but I think the third is most likely to become law. There's no way I want the first approach, but there are some GOPers who want that very much. The leaders are going to have to settle on an approach very soon, and no matter which one they pick, they will be vilified. But that's what they signed up for.