Right we have two supreme court justices, Roberts and Kennedy, deciding every controversial case. You have to give it to "W", he put the right man in charge of the Supreme court. Since there isn't one moderate (whatever that is now) person running for president, nothing is going to change. They will appoint someone with their political views. This is a road to nowhere.

If costs continue to grow under ACA, but not as much as they would have done without it, does that make the ACA a failure? If you repeal it, and not replace it, what do you think health care insurers are going to do, when they lose 6-9 million customers?

The answer is single payer. If you think that insurance carriers process claims more cheaply, then farm that out to them. However, you set the price that they will be receiving. In the late nineties, it was reported that it cost the government 4 cents to process a claim, and insurance carriers 24 cents. That gap has to be a lot closer due to the number of seniors now versus then in Medicare.

Socialism! Who cares what you call it? If it cheaper, and works, what is the problem?
You think rates will change if insurance carriers can cross state lines, thereby creating competition, you are dreaming.