We have no chance of unwinding it anymore, in my opinion.It won't matter if you have insurance or not, all of the mid range and higher doctors are bailing out on the exchanges. The payments to the provider are too low to cover the cost of doing business. It won't be very long and we'll only have third world medicine here. We really need a landslide election in 2014 to have any hope of unwinding ACA, 2016 will be too late.
Once you give away free things to people (or ridiculously inexpensive subsidized versions of things), you can't take it away from them again. If you do, NPR will report on it night and day calling it "austerity", and the Left will orchestrate massive demonstrations which usually turn into molotov cocktail festivals and street riots- per Europe.
Besides that, the Conservatives in this nation have done a terrible job of keeping citizenship as a major topic of discussion. Gradually, the Far Left is succeeding at adding and legitimizing millions of illegal immigrants, giving them healthcare, food and shelter subsidies- which increase with every child they give birth to. And all those millions of immigrants are very soon going to be finding their ways to the voting booths. And when they do, the only thing they're going to hear is that Liberal Candidate A wants to give them more benefits and Conservative Candidate B wants to take them away. Guess who wins those districts?